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(-) Description

Title :  METHYL-COENZYME M REDUCTASE IN THE MCR-RED1-SILENT STATE IN COMPLEX WITH COENZYME M
 
Authors :  U. Ermler, W. Grabarse
Date :  20 Apr 01  (Deposition) - 16 Aug 01  (Release) - 05 Jul 17  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.90
Chains :  Asym./Biol. Unit :  A,B,C,D,E,F
Keywords :  Methanogenesis, Biological Methanogenesis, Ni-Enzyme, Oxidoreductase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  W. Grabarse, F. Mahlert, E. C. Duin, M. Goubeaud, S. Shima, R. K. Thauer V. Lamzin, U. Ermler
On The Mechanism Of Biological Methane Formation: Structura Evidence For Conformational Changes In Methyl-Coenzyme M Reductase Upon Substrate Binding
J. Mol. Biol. V. 309 315 2001
PubMed-ID: 11491299  |  Reference-DOI: 10.1006/JMBI.2001.4647

(-) Compounds

Molecule 1 - METHYL-COENZYME M REDUCTASE I ALPHA SUBUNIT
    Cellular Location: CYTOPLASM
    Chains: A, D
    Organism Scientific: METHANOTHERMOBACTER MARBURGENSIS
    Organism Taxid: 79929
    Strain: MARBURG
 
Molecule 2 - METHYL-COENZYME M REDUCTASE I BETA SUBUNIT
    Cellular Location: CYTOPLASM
    Chains: B, E
    Organism Scientific: METHANOTHERMOBACTER MARBURGENSIS
    Organism Taxid: 79929
    Strain: MARBURG
 
Molecule 3 - METHYL-COENZYME M REDUCTASE I GAMMA SUBUNIT
    Chains: C, F
    Organism Scientific: METHANOTHERMOBACTER MARBURGENSIS
    Organism Taxid: 79929
    Other Details: MCR-OX-SILENT STATE, ENZYME-SUBSTRATE COMPLEX
    Strain: MARBURG

 Structural Features

(-) Chains, Units

  123456
Asymmetric/Biological Unit : ABCDEF

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (13, 52)

Asymmetric/Biological Unit (13, 52)
No.NameCountTypeFull Name
1AGM2Mod. Amino Acid5-METHYL-ARGININE
2CL2Ligand/IonCHLORIDE ION
3COM2Ligand/Ion1-THIOETHANESULFONIC ACID
4F432Ligand/IonFACTOR 430
5GL32Mod. Amino AcidTHIOGLYCIN
6GOL11Ligand/IonGLYCEROL
7MG13Ligand/IonMAGNESIUM ION
8MGN2Mod. Amino Acid2-METHYL-GLUTAMINE
9MHS2Mod. Amino AcidN1-METHYLATED HISTIDINE
10NA9Ligand/IonSODIUM ION
11SMC2Mod. Amino AcidS-METHYLCYSTEINE
12TP72Ligand/IonCOENZYME B
13ZN1Ligand/IonZINC ION

(-) Sites  (42, 42)

Asymmetric Unit (42, 42)
No.NameEvidenceResiduesDescription
01AC1SOFTWAREARG A:102 , SER A:215 , ARG A:216 , CYS A:218 , ARG D:102 , SER D:215 , ARG D:216 , CYS D:218BINDING SITE FOR RESIDUE ZN A 1557
02AC2SOFTWAREGLU A:117 , VAL A:124 , HOH A:2164 , HOH A:2165BINDING SITE FOR RESIDUE MG A 1558
03AC3SOFTWARELYS A:11 , PHE A:14 , HOH A:2025 , HOH A:2032 , HOH A:2034 , HOH A:2044BINDING SITE FOR RESIDUE NA A 1559
04AC4SOFTWAREGOL A:1553 , HOH A:2266 , ARG D:270 , HOH D:2131 , HOH D:2265 , HOH D:2434BINDING SITE FOR RESIDUE NA A 1560
05AC5SOFTWAREALA A:544 , THR A:547 , PRO A:548 , HOH A:2427 , HOH A:2428BINDING SITE FOR RESIDUE NA A 1561
06AC6SOFTWAREPRO A:58 , ILE A:60 , THR A:62 , HOH A:2106 , HOH A:2109 , HOH D:2165BINDING SITE FOR RESIDUE NA A 1562
07AC7SOFTWAREHOH A:2194 , HOH A:2195BINDING SITE FOR RESIDUE MG A 1563
08AC8SOFTWAREHOH A:2045 , HOH A:2063BINDING SITE FOR RESIDUE MG A 1564
09AC9SOFTWAREHOH A:2018 , HOH A:2019 , HOH A:2040 , HOH A:2059BINDING SITE FOR RESIDUE MG A 1565
10BC1SOFTWAREHOH A:2024 , HOH A:2055 , HOH A:2173 , HOH A:2340BINDING SITE FOR RESIDUE MG A 1566
11BC2SOFTWAREHOH A:2099 , ASN B:441 , HOH B:2381 , HOH D:2190 , HOH D:2192BINDING SITE FOR RESIDUE NA B 1445
12BC3SOFTWAREARG B:235 , HOH B:2116BINDING SITE FOR RESIDUE CL B 1446
13BC4SOFTWAREASP B:271 , HOH B:2288 , HOH B:2290 , HOH B:2291 , HOH B:2292BINDING SITE FOR RESIDUE MG B 1447
14BC5SOFTWAREASP B:99 , THR B:101 , HOH B:2128 , HOH B:2144 , HOH B:2148 , HOH B:2149BINDING SITE FOR RESIDUE NA B 1448
15BC6SOFTWAREGLU B:104 , HOH B:2153BINDING SITE FOR RESIDUE MG B 1449
16BC7SOFTWAREGLU C:30 , HOH C:2027 , HOH C:2053 , HOH C:2056 , HOH C:2144 , HOH F:2046BINDING SITE FOR RESIDUE MG C 1250
17BC8SOFTWAREGLU D:175 , HOH D:2185 , HOH D:2186 , HOH D:2187BINDING SITE FOR RESIDUE MG D 1557
18BC9SOFTWARELYS D:11 , PHE D:14 , HOH D:2011 , HOH D:2017 , HOH D:2020 , HOH D:2025BINDING SITE FOR RESIDUE NA D 1558
19CC1SOFTWAREARG A:270 , HOH A:2261 , GOL D:1554 , HOH D:2272 , HOH D:2438BINDING SITE FOR RESIDUE NA D 1559
20CC2SOFTWAREHOH A:2177 , PRO D:58 , ILE D:60 , THR D:62 , HOH D:2091 , HOH D:2092BINDING SITE FOR RESIDUE NA D 1560
21CC3SOFTWAREARG E:235 , HOH E:2104 , HOH E:2301BINDING SITE FOR RESIDUE CL E 1445
22CC4SOFTWAREASP E:271 , HOH E:2273 , HOH E:2275 , HOH E:2276BINDING SITE FOR RESIDUE MG E 1446
23CC5SOFTWAREHOH E:2032 , HOH E:2097 , HOH E:2098BINDING SITE FOR RESIDUE MG E 1447
24CC6SOFTWAREASP E:147 , HOH E:2173 , HOH E:2174 , HOH E:2175BINDING SITE FOR RESIDUE MG E 1448
25CC7SOFTWAREHOH C:2046 , GLU F:30 , HOH F:2052 , HOH F:2055 , HOH F:2146 , HOH F:2151BINDING SITE FOR RESIDUE MG F 1249
26CC8SOFTWAREGLY A:326 , GLY A:327 , VAL A:328 , GLY A:329 , PHE A:330 , THR A:331 , GLN A:332 , TYR A:333 , PHE A:396 , GLY A:397 , GLY A:442 , PHE A:443 , COM A:1552 , HOH A:2343 , HOH A:2433 , HOH A:2434 , HOH A:2435 , HOH A:2436 , HOH A:2437 , SER B:365 , ILE B:366 , TYR B:367 , LEU C:117 , SER C:118 , GLY C:119 , LYS C:153 , SER C:154 , VAL C:155 , HIS C:156 , HIS C:158 , HOH C:2156 , ALA D:144 , VAL D:145 , VAL D:146 , GLN D:147 , GLN D:230 , MET D:233 , ALA D:243 , HOH D:2241BINDING SITE FOR RESIDUE F43 A 1550
27CC9SOFTWAREARG A:270 , LEU A:320 , MET A:324 , PHE A:330 , PHE A:443 , MET A:480 , ASN A:481 , VAL A:482 , HOH A:2295 , HOH A:2438 , HOH A:2439 , HOH A:2440 , PHE B:362 , TYR B:367 , GLY B:368 , GLY B:369 , HIS B:379 , HOH B:2342 , ARG D:225 , LYS D:256 , MHS D:257 , HOH D:2438BINDING SITE FOR RESIDUE TP7 A 1551
28DC1SOFTWARETYR A:333 , PHE A:443 , TYR A:444 , F43 A:1550 , HOH A:2441 , PHE B:361 , SER B:365 , TYR B:367 , LEU C:117 , ARG C:120BINDING SITE FOR RESIDUE COM A 1552
29DC2SOFTWAREALA A:144 , VAL A:145 , VAL A:146 , GLN A:147 , GLN A:230 , MET A:233 , ALA A:243 , HOH A:2180 , HOH A:2237 , GLY D:326 , GLY D:327 , VAL D:328 , GLY D:329 , PHE D:330 , THR D:331 , GLN D:332 , TYR D:333 , GLY D:397 , GLY D:442 , PHE D:443 , COM D:1552 , HOH D:2427 , HOH D:2428 , HOH D:2429 , HOH D:2430 , SER E:365 , ILE E:366 , TYR E:367 , LEU F:117 , SER F:118 , GLY F:119 , LYS F:153 , SER F:154 , VAL F:155 , HIS F:156 , HIS F:158 , HOH F:2162 , HOH F:2165BINDING SITE FOR RESIDUE F43 D 1550
30DC3SOFTWAREARG A:225 , LYS A:256 , MHS A:257 , ARG D:270 , LEU D:320 , MET D:324 , PHE D:330 , PHE D:443 , MET D:480 , ASN D:481 , VAL D:482 , HOH D:2300 , HOH D:2375 , HOH D:2431 , HOH D:2432 , HOH D:2433 , HOH D:2434 , PHE E:362 , TYR E:367 , GLY E:368 , GLY E:369 , HIS E:379 , VAL E:381BINDING SITE FOR RESIDUE TP7 D 1551
31DC4SOFTWARETYR D:333 , PHE D:443 , TYR D:444 , F43 D:1550 , HOH D:2435 , PHE E:361 , SER E:365 , TYR E:367 , LEU F:117 , ARG F:120BINDING SITE FOR RESIDUE COM D 1552
32DC5SOFTWARESER A:224 , LYS A:256 , HIS A:262 , GLU A:275 , NA A:1560 , HOH A:2266 , HOH D:2265BINDING SITE FOR RESIDUE GOL A 1553
33DC6SOFTWAREASP A:170 , ALA A:173 , ASP A:174 , ASP A:183 , ASN A:185 , HOH A:2442 , HOH A:2443BINDING SITE FOR RESIDUE GOL A 1554
34DC7SOFTWAREVAL A:519 , LYS A:531 , PHE A:537 , GLU A:538 , HOH A:2407 , HOH A:2408BINDING SITE FOR RESIDUE GOL A 1555
35DC8SOFTWARELYS A:4 , ASP A:345 , TYR A:348 , GLU A:352 , TYR A:380 , HOH A:2007BINDING SITE FOR RESIDUE GOL A 1556
36DC9SOFTWARELYS B:3 , GLU B:25 , SER B:28 , ARG B:31 , GLU B:234 , HOH B:2051 , HOH B:2385 , VAL E:95BINDING SITE FOR RESIDUE GOL B 1444
37EC1SOFTWARETYR C:109 , ARG C:110 , ASP C:129 , HOH C:2251 , HOH C:2252 , HOH C:2253 , HOH C:2254BINDING SITE FOR RESIDUE GOL C 1249
38EC2SOFTWAREALA D:173 , ASP D:174 , ASP D:183 , ASN D:185 , HOH D:2198 , HOH D:2199 , HOH D:2436 , HOH D:2437BINDING SITE FOR RESIDUE GOL D 1553
39EC3SOFTWARESER D:224 , ARG D:225 , LYS D:256 , HIS D:262 , GLU D:275 , NA D:1559 , HOH D:2273 , HOH D:2438BINDING SITE FOR RESIDUE GOL D 1554
40EC4SOFTWAREGLN D:291 , ARG D:294 , PHE D:513 , ASP D:515 , LEU D:518 , PHE D:520 , ASP D:521 , PHE D:522 , THR D:523 , HOH D:2439BINDING SITE FOR RESIDUE GOL D 1555
41EC5SOFTWAREASP D:345 , GLU D:352 , TYR D:380 , HOH D:2001BINDING SITE FOR RESIDUE GOL D 1556
42EC6SOFTWAREVAL B:95 , LYS E:3 , GLU E:25 , SER E:28 , LEU E:30 , ARG E:31 , GLU E:234 , HOH E:2247BINDING SITE FOR RESIDUE GOL E 1444

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1HBU)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1HBU)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1HBU)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1HBU)

(-) Exons   (0, 0)

(no "Exon" information available for 1HBU)

(-) Sequences/Alignments

Asymmetric/Biological Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it) 
Chain A from PDB  Type:PROTEIN  Length:548
 aligned with MCRA_METTM | P11558 from UniProtKB/Swiss-Prot  Length:550

    Alignment length:548
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391       401       411       421       431       441       451       461       471       481       491       501       511       521       531       541        
           MCRA_METTM     2 ADKLFINALKKKFEESPEEKKTTFYTLGGWKQSERKTEFVNAGKEVAAKRGIPQYNPDIGTPLGQRVLMPYQVSTTDTYVEGDDLHFVNNAAMQQMWDDIRRTVIVGLNHAHAVIEKRLGKEVTPETITHYLETVNHAMPGAAVVQEHMVETHPALVADSYVKVFTGNDEIADEIDPAFVIDINKQFPEDQAETLKAEVGDGIWQVVRIPTIVSRTCDGATTSRWSAMQIGMSMISAYKQAAGEAATGDFAYAAKHAEVIHMGTYLPVRRARGENEPGGVPFGYLADICQSSRVNYEDPVRVSLDVVATGAMLYDQIWLGSYMSGGVGFTQYATAAYTDNILDDFTYFGKEYVEDKYGLCEAPNNMDTVLDVATEVTFYGLEQYEEYPALLEDQFGGSQRAAVVAAAAGCSTAFATGNAQTGLSGWYLSMYLHKEQHSRLGFYGYDLQDQCGASNVFSIRGDEGLPLELRGPNYPNYAMNVGHQGEYAGISQAPHAARGDAFVFNPLVKIAFADDNLVFDFTNVRGEFAKGALREFEPAGERALITPA 549
               SCOP domains d1hbua2 A:2-269 Alpha chain                                                                                                                                                                                                                                                 d1hbua1 A:270-549 Alpha chain                                                                                                                                                                                                                                                            SCOP domains
               CATH domains -1hbuA01 A:3-101 Methyl-coenzyme M Reductase; Chain A, domain 1                                     1hbuA02 A:102-276  [code=3.30.70.470, no name defined]                                                                                                                         1hbuA03 A:277-536 Methyl-coenzyme M Reductase; Chain B, domain 2                                                                                                                                                                                                    ------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
     Sec.struct. author (1) hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author (1)
     Sec.struct. author (2) ---------------------------------------------------------------------eee------eee---------------------eeeee-----------------------------------------------------eeeeee------------------------------------eeeeee--------------------------------------------------ee------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Sec.struct. author (2)
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1hbu A   2 ADKLFINALKKKFEESPEEKKTTFYTLGGWKQSERKTEFVNAGKEVAAKRGIPQYNPDIGTPLGQRVLMPYQVSTTDTYVEGDDLHFVNNAAMQQMWDDIRRTVIVGLNHAHAVIEKRLGKEVTPETITHYLETVNHAMPGAAVVQEHMVETHPALVADSYVKVFTGNDEIADEIDPAFVIDINKQFPEDQAETLKAEVGDGIWQVVRIPTIVSRTCDGATTSRWSAMQIGMSMISAYKQAAGEAATGDFAYAAKhAEVIHMGTYLPVRrARGENEPGGVPFGYLADICQSSRVNYEDPVRVSLDVVATGAMLYDQIWLGSYMSGGVGFTQYATAAYTDNILDDFTYFGKEYVEDKYGLCEAPNNMDTVLDVATEVTFYGLEQYEEYPALLEDQFGGSqRAAVVAAAAGCSTAFATGNAQTGLSGWYLSMYLHKEQHSRLGFYgYDLQDQcGASNVFSIRGDEGLPLELRGPNYPNYAMNVGHQGEYAGISQAPHAARGDAFVFNPLVKIAFADDNLVFDFTNVRGEFAKGALREFEPAGERALITPA 549
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251     | 261       271       281       291       301       311       321       331       341       351       361       371       381       391       401       411       421       431       441   |   451|      461       471       481       491       501       511       521       531       541        
                                                                                                                                                                                                                                                                                         257-MHS       271-AGM                                                                                                                          400-MGN                                      445-GL3  |                                                                                                 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            452-SMC                                                                                             


Chain B from PDB  Type:PROTEIN  Length:442
 aligned with MCRB_METTM | P11560 from UniProtKB/Swiss-Prot  Length:443

    Alignment length:442
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391       401       411       421       431       441  
           MCRB_METTM     2 AKFEDKVDLYDDRGNLVEEQVPLEALSPLRNPAIKSIVQGIKRTVAVNLEGIENALKTAKVGGPACKIMGRELDLDIVGNAESIAAAAKEMIQVTEDDDTNVELLGGGKRALVQVPSARFDVAAEYSAAPLVTATAFVQAIINEFDVSMYDANMVKAAVLGRYPQSVEYMGANIATMLDIPQKLEGPGYALRNIMVNHVVAATLKNTLQAAALSTILEQTAMFEMGDAVGAFERMHLLGLAYQGMNADNLVFDLVKANGKEGTVGSVIADLVERALEDGVIKVEKELTDYKVYGTDDLAMWNAYAAAGLMAATMVNQGAARAAQGVSSTLLYYNDLIEFETGLPSVDFGKVEGTAVGFSFFSHSIYGGGGPGIFNGNHIVTRHSKGFAIPCVAAAMALDAGTQMFSPEATSGLIKEVFSQVDEFREPLKYVVEAAAEIKNEI 443
               SCOP domains d1hbub2 B:2-188 Beta chain                                                                                                                                                                 d1hbub1 B:189-443 Beta chain                                                                                                                                                                                                                                    SCOP domains
               CATH domains 1hbuB02 B:2-44,B:192-443                   1hbuB01 B:45-191  [code=3.30.70.470, no name defined]                                                                                              1hbuB02 B:2-44,B:192-443 Methyl-coenzyme M Reductase; Chain B, domain 2                                                                                                                                                                                      CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
     Sec.struct. author (1) hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author (1)
     Sec.struct. author (2) -----eeeee-----eeeeeee---------------------eeeee----------------------------------------------------eeeee----eeeee-----------------------------------------------------------ee----------------------------------------------------------------------------------------------------------eeeeee--eeeee---------------------------------------------------------------------------------------------------------------------------------------------------- Sec.struct. author (2)
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1hbu B   2 AKFEDKVDLYDDRGNLVEEQVPLEALSPLRNPAIKSIVQGIKRTVAVNLEGIENALKTAKVGGPACKIMGRELDLDIVGNAESIAAAAKEMIQVTEDDDTNVELLGGGKRALVQVPSARFDVAAEYSAAPLVTATAFVQAIINEFDVSMYDANMVKAAVLGRYPQSVEYMGANIATMLDIPQKLEGPGYALRNIMVNHVVAATLKNTLQAAALSTILEQTAMFEMGDAVGAFERMHLLGLAYQGMNADNLVFDLVKANGKEGTVGSVIADLVERALEDGVIKVEKELTDYKVYGTDDLAMWNAYAAAGLMAATMVNQGAARAAQGVSSTLLYYNDLIEFETGLPSVDFGKVEGTAVGFSFFSHSIYGGGGPGIFNGNHIVTRHSKGFAIPCVAAAMALDAGTQMFSPEATSGLIKEVFSQVDEFREPLKYVVEAAAEIKNEI 443
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391       401       411       421       431       441  


Chain C from PDB  Type:PROTEIN  Length:247
 aligned with MCRG_METTM | P11562 from UniProtKB/Swiss-Prot  Length:249

    Alignment length:247
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       
           MCRG_METTM     2 AQYYPGTTKVAQNRRNFCNPEYELEKLREISDEDVVKILGHRAPGEEYPSVHPPLEEMDEPEDAIREMVEPIDGAKAGDRVRYIQFTDSMYFAPAQPYVRSRAYLCRYRGADAGTLSGRQIIETRERDLEKISKELLETEFFDPARSGVRGKSVHGHSLRLDEDGMMFDMLRRQIYNKDTGRVEMVKNQIGDELDEPVDLGEPLDEETLMEKTTIYRVDGEAYRDDVEAVEIMQRIHVLRSQGGFNL 248
               SCOP domains d1hbuc_ C: Methyl-coenzyme M reductase gamma chain                                                                                                                                                                                                      SCOP domains
               CATH domains 1hbuC00 C:2-248  [code=3.90.320.20, no name defined]                                                                                                                                                                                                    CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
     Sec.struct. author (1) hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author (1)
     Sec.struct. author (2) --------------------------------------------------------------------------------eeeeeeee-----------------------eeee----eeeeee---------------------eee------------------------eee------eeeee-----eeeeeee------------------------------------------------ Sec.struct. author (2)
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1hbu C   2 AQYYPGTTKVAQNRRNFCNPEYELEKLREISDEDVVKILGHRAPGEEYPSVHPPLEEMDEPEDAIREMVEPIDGAKAGDRVRYIQFTDSMYFAPAQPYVRSRAYLCRYRGADAGTLSGRQIIETRERDLEKISKELLETEFFDPARSGVRGKSVHGHSLRLDEDGMMFDMLRRQIYNKDTGRVEMVKNQIGDELDEPVDLGEPLDEETLMEKTTIYRVDGEAYRDDVEAVEIMQRIHVLRSQGGFNL 248
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       


Chain D from PDB  Type:PROTEIN  Length:548
 aligned with MCRA_METTM | P11558 from UniProtKB/Swiss-Prot  Length:550

    Alignment length:548
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391       401       411       421       431       441       451       461       471       481       491       501       511       521       531       541        
           MCRA_METTM     2 ADKLFINALKKKFEESPEEKKTTFYTLGGWKQSERKTEFVNAGKEVAAKRGIPQYNPDIGTPLGQRVLMPYQVSTTDTYVEGDDLHFVNNAAMQQMWDDIRRTVIVGLNHAHAVIEKRLGKEVTPETITHYLETVNHAMPGAAVVQEHMVETHPALVADSYVKVFTGNDEIADEIDPAFVIDINKQFPEDQAETLKAEVGDGIWQVVRIPTIVSRTCDGATTSRWSAMQIGMSMISAYKQAAGEAATGDFAYAAKHAEVIHMGTYLPVRRARGENEPGGVPFGYLADICQSSRVNYEDPVRVSLDVVATGAMLYDQIWLGSYMSGGVGFTQYATAAYTDNILDDFTYFGKEYVEDKYGLCEAPNNMDTVLDVATEVTFYGLEQYEEYPALLEDQFGGSQRAAVVAAAAGCSTAFATGNAQTGLSGWYLSMYLHKEQHSRLGFYGYDLQDQCGASNVFSIRGDEGLPLELRGPNYPNYAMNVGHQGEYAGISQAPHAARGDAFVFNPLVKIAFADDNLVFDFTNVRGEFAKGALREFEPAGERALITPA 549
               SCOP domains d1hbud2 D:2-269 Alpha chain                                                                                                                                                                                                                                                 d1hbud1 D:270-549 Alpha chain                                                                                                                                                                                                                                                            SCOP domains
               CATH domains -1hbuD01 D:3-101 Methyl-coenzyme M Reductase; Chain A, domain 1                                     1hbuD02 D:102-276  [code=3.30.70.470, no name defined]                                                                                                                         1hbuD03 D:277-536 Methyl-coenzyme M Reductase; Chain B, domain 2                                                                                                                                                                                                    ------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
     Sec.struct. author (1) hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.....hhhhhhh....hhhhhhhhhhhhhhhhhh.......hhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.......hhhhhhhhhhhh........hhhhh...hhhhh....hhhhhhhhhhhhhhhhh.....hhhhhhhh..........hhhhhhhhhhh........hhhhh.. Sec.struct. author (1)
     Sec.struct. author (2) ---------------------------------------------------------------------eee------eee---------------------eeeee-----------------------------------------------------eeeeee------------------------------------eeeeee--------------------------------------------------ee------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Sec.struct. author (2)
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1hbu D   2 ADKLFINALKKKFEESPEEKKTTFYTLGGWKQSERKTEFVNAGKEVAAKRGIPQYNPDIGTPLGQRVLMPYQVSTTDTYVEGDDLHFVNNAAMQQMWDDIRRTVIVGLNHAHAVIEKRLGKEVTPETITHYLETVNHAMPGAAVVQEHMVETHPALVADSYVKVFTGNDEIADEIDPAFVIDINKQFPEDQAETLKAEVGDGIWQVVRIPTIVSRTCDGATTSRWSAMQIGMSMISAYKQAAGEAATGDFAYAAKhAEVIHMGTYLPVRrARGENEPGGVPFGYLADICQSSRVNYEDPVRVSLDVVATGAMLYDQIWLGSYMSGGVGFTQYATAAYTDNILDDFTYFGKEYVEDKYGLCEAPNNMDTVLDVATEVTFYGLEQYEEYPALLEDQFGGSqRAAVVAAAAGCSTAFATGNAQTGLSGWYLSMYLHKEQHSRLGFYgYDLQDQcGASNVFSIRGDEGLPLELRGPNYPNYAMNVGHQGEYAGISQAPHAARGDAFVFNPLVKIAFADDNLVFDFTNVRGEFAKGALREFEPAGERALITPA 549
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251     | 261       271       281       291       301       311       321       331       341       351       361       371       381       391       401       411       421       431       441   |   451|      461       471       481       491       501       511       521       531       541        
                                                                                                                                                                                                                                                                                         257-MHS       271-AGM                                                                                                                          400-MGN                                      445-GL3  |                                                                                                 
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            452-SMC                                                                                             


Chain E from PDB  Type:PROTEIN  Length:442
 aligned with MCRB_METTM | P11560 from UniProtKB/Swiss-Prot  Length:443

    Alignment length:442
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391       401       411       421       431       441  
           MCRB_METTM     2 AKFEDKVDLYDDRGNLVEEQVPLEALSPLRNPAIKSIVQGIKRTVAVNLEGIENALKTAKVGGPACKIMGRELDLDIVGNAESIAAAAKEMIQVTEDDDTNVELLGGGKRALVQVPSARFDVAAEYSAAPLVTATAFVQAIINEFDVSMYDANMVKAAVLGRYPQSVEYMGANIATMLDIPQKLEGPGYALRNIMVNHVVAATLKNTLQAAALSTILEQTAMFEMGDAVGAFERMHLLGLAYQGMNADNLVFDLVKANGKEGTVGSVIADLVERALEDGVIKVEKELTDYKVYGTDDLAMWNAYAAAGLMAATMVNQGAARAAQGVSSTLLYYNDLIEFETGLPSVDFGKVEGTAVGFSFFSHSIYGGGGPGIFNGNHIVTRHSKGFAIPCVAAAMALDAGTQMFSPEATSGLIKEVFSQVDEFREPLKYVVEAAAEIKNEI 443
               SCOP domains d1hbue2 E:2-188 Beta chain                                                                                                                                                                 d1hbue1 E:189-443 Beta chain                                                                                                                                                                                                                                    SCOP domains
               CATH domains 1hbuE02 E:2-44,E:192-443                   1hbuE01 E:45-191  [code=3.30.70.470, no name defined]                                                                                              1hbuE02 E:2-44,E:192-443 Methyl-coenzyme M Reductase; Chain B, domain 2                                                                                                                                                                                      CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .....eeeee.....eeeeeee.hhhh...hhhhhhhhhhhhheeeeehhhhhhhhhhh.................hhhhhhhhhhhhhhhhh.......eeeeehhh.eeeee.hhhhhhh....hhhhhhhhhhhhhhhhhhhh....hhhhhhhhhhh............ee....hhhhh....hhhhh.hhhhhhhhh..hhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhh...eeeeee..eeeee..hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhh.......hhhhh.............hhhhhhhhhhhh......hhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1hbu E   2 AKFEDKVDLYDDRGNLVEEQVPLEALSPLRNPAIKSIVQGIKRTVAVNLEGIENALKTAKVGGPACKIMGRELDLDIVGNAESIAAAAKEMIQVTEDDDTNVELLGGGKRALVQVPSARFDVAAEYSAAPLVTATAFVQAIINEFDVSMYDANMVKAAVLGRYPQSVEYMGANIATMLDIPQKLEGPGYALRNIMVNHVVAATLKNTLQAAALSTILEQTAMFEMGDAVGAFERMHLLGLAYQGMNADNLVFDLVKANGKEGTVGSVIADLVERALEDGVIKVEKELTDYKVYGTDDLAMWNAYAAAGLMAATMVNQGAARAAQGVSSTLLYYNDLIEFETGLPSVDFGKVEGTAVGFSFFSHSIYGGGGPGIFNGNHIVTRHSKGFAIPCVAAAMALDAGTQMFSPEATSGLIKEVFSQVDEFREPLKYVVEAAAEIKNEI 443
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391       401       411       421       431       441  


Chain F from PDB  Type:PROTEIN  Length:247
 aligned with MCRG_METTM | P11562 from UniProtKB/Swiss-Prot  Length:249

    Alignment length:247
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       
           MCRG_METTM     2 AQYYPGTTKVAQNRRNFCNPEYELEKLREISDEDVVKILGHRAPGEEYPSVHPPLEEMDEPEDAIREMVEPIDGAKAGDRVRYIQFTDSMYFAPAQPYVRSRAYLCRYRGADAGTLSGRQIIETRERDLEKISKELLETEFFDPARSGVRGKSVHGHSLRLDEDGMMFDMLRRQIYNKDTGRVEMVKNQIGDELDEPVDLGEPLDEETLMEKTTIYRVDGEAYRDDVEAVEIMQRIHVLRSQGGFNL 248
               SCOP domains d1hbuf_ F: Methyl-coenzyme M reductase gamma chain                                                                                                                                                                                                      SCOP domains
               CATH domains 1hbuF00 F:2-248  [code=3.90.320.20, no name defined]                                                                                                                                                                                                    CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .......hhhhhhhhhhhh...........hhhhhhhhhh.............hhhhh....hhhhhhh..hhhhhh...eeeeeeee.......hhhhhhhhhhhhh...eeee....eeeeeehhhhhhhhhhhhhh.......eee........................eeee....eeeeee.....eeeeeee.....hhhhhhhhh........hhhhhhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1hbu F   2 AQYYPGTTKVAQNRRNFCNPEYELEKLREISDEDVVKILGHRAPGEEYPSVHPPLEEMDEPEDAIREMVEPIDGAKAGDRVRYIQFTDSMYFAPAQPYVRSRAYLCRYRGADAGTLSGRQIIETRERDLEKISKELLETEFFDPARSGVRGKSVHGHSLRLDEDGMMFDMLRRQIYNKDTGRVEMVKNQIGDELDEPVDLGEPLDEETLMEKTTIYRVDGEAYRDDVEAVEIMQRIHVLRSQGGFNL 248
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241
   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (5, 10)

Asymmetric/Biological Unit
(-)
Class: All alpha proteins (14657)
(-)
Class: Alpha and beta proteins (a+b) (23004)

(-) CATH Domains  (4, 12)

Asymmetric/Biological Unit
(-)
Class: Alpha Beta (26913)
(-)
Class: Mainly Alpha (13335)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1HBU)

(-) Gene Ontology  (4, 10)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A,D   (MCRA_METTM | P11558)
molecular function
    GO:0050524    coenzyme-B sulfoethylthiotransferase activity    Catalysis of the reaction: coenzyme B + methyl-coenzyme M = coenzyme M-coenzyme B heterodisulfide + methane. Methyl-CoM is also known as 2-(methylthio)ethanesulfonate, coenzyme B as N-(7-mercaptoheptanoyl)threonine 3-O-phosphate, and coenzyme M-coenzyme B heterodisulfide as CoM-S-S-CoB.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0016740    transferase activity    Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2.
biological process
    GO:0015948    methanogenesis    The chemical reactions and pathways resulting in the formation of methane, a colorless, odorless, flammable gas with the formula CH4. It is the simplest of the alkanes.

Chain B,E   (MCRB_METTM | P11560)
molecular function
    GO:0050524    coenzyme-B sulfoethylthiotransferase activity    Catalysis of the reaction: coenzyme B + methyl-coenzyme M = coenzyme M-coenzyme B heterodisulfide + methane. Methyl-CoM is also known as 2-(methylthio)ethanesulfonate, coenzyme B as N-(7-mercaptoheptanoyl)threonine 3-O-phosphate, and coenzyme M-coenzyme B heterodisulfide as CoM-S-S-CoB.
    GO:0016740    transferase activity    Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2.
biological process
    GO:0015948    methanogenesis    The chemical reactions and pathways resulting in the formation of methane, a colorless, odorless, flammable gas with the formula CH4. It is the simplest of the alkanes.

Chain C,F   (MCRG_METTM | P11562)
molecular function
    GO:0050524    coenzyme-B sulfoethylthiotransferase activity    Catalysis of the reaction: coenzyme B + methyl-coenzyme M = coenzyme M-coenzyme B heterodisulfide + methane. Methyl-CoM is also known as 2-(methylthio)ethanesulfonate, coenzyme B as N-(7-mercaptoheptanoyl)threonine 3-O-phosphate, and coenzyme M-coenzyme B heterodisulfide as CoM-S-S-CoB.
    GO:0016740    transferase activity    Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2.
biological process
    GO:0015948    methanogenesis    The chemical reactions and pathways resulting in the formation of methane, a colorless, odorless, flammable gas with the formula CH4. It is the simplest of the alkanes.

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  Cis Peptide Bonds
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  1hbu
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  MCRA_METTM | P11558
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  MCRB_METTM | P11560
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  MCRG_METTM | P11562
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  MCRA_METTM | P11558
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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        MCRA_METTM | P11558: 1hbm 1hbn 1hbo 1mro 3m1v 3m2r 3m2u 3m2v 3m30 3m32 3pot 5a0y 5g0r
        MCRB_METTM | P11560: 1hbm 1hbn 1hbo 1mro 3m1v 3m2r 3m2u 3m2v 3m30 3m32 3pot 5a0y 5g0r
        MCRG_METTM | P11562: 1hbm 1hbn 1hbo 1mro 3m1v 3m2r 3m2u 3m2v 3m30 3m32 3pot 5a0y 5g0r

(-) Related Entries Specified in the PDB File

1hbm METHYL-COENZYME M REDUCTASE ENZYME PRODUCT COMPLEX
1hbn METHYL-COENZYME M REDUCTASE
1hbo METHYL-COENZYME M REDUCTASE MCR-RED1-SILENT