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(-) Description

Title :  COMPLEX BETWEEN THE BARLEY ALPHA-AMYLASE/SUBTILISIN INHIBITOR AND THE SUBTILISIN SAVINASE
 
Authors :  P. O. Micheelsen, J. Vevodova, K. Wilson, M. Skjot
Date :  11 Jan 08  (Deposition) - 08 Jul 08  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.85
Chains :  Asym. Unit :  A,B,C,D
Biol. Unit 1:  A,C  (1x)
Biol. Unit 2:  B,D  (1x)
Biol. Unit 3:  A,B,C,D  (2x)
Keywords :  Complex (Proteinase/Inhibitor) Enzyme Inhibition, Savinase, Barley Alpha-Amylase/Subtilisin Inhibitor, Calcium, Hydrolase, Metal-Binding, Protease, Secreted, Serine Protease, Sporulation, Alpha-Amylase Inhibitor, Protease Inhibitor, Serine Protease Inhibitor, Hydrolase/Hydrolase Inhibitor Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  P. O. Micheelsen, J. Vevodova, L. De Maria, P. R. Ostergaard, E. P. Friis, K. Wilson, M. Skjot
Structural And Mutational Analyses Of The Interaction Between The Barley Alpha-Amylase/Subtilisin Inhibitor And The Subtilisin Savinase Reveal A Novel Mode Of Inhibition
J. Mol. Biol. V. 380 681 2008
PubMed-ID: 18556023  |  Reference-DOI: 10.1016/J.JMB.2008.05.034
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - SUBTILISIN SAVINASE
    Chains: A, B
    EC Number: 3.4.21.62
    Engineered: YES
    Expression System: BACILLUS SUBTILIS
    Organism Scientific: BACILLUS LENTUS
    Synonym: ALKALINE PROTEASE
 
Molecule 2 - ALPHA-AMYLASE/SUBTILISIN INHIBITOR
    Chains: D, C
    Engineered: YES
    Expression System: PICHIA PASTORIS
    Organism Common: BARLEY
    Organism Scientific: HORDEUM VULGARE
    Synonym: BASI

 Structural Features

(-) Chains, Units

  1234
Asymmetric Unit : ABCD
Biological Unit 1 (1x): A C 
Biological Unit 2 (1x):  B D
Biological Unit 3 (2x): ABCD

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (3, 34)

Asymmetric Unit (3, 34)
No.NameCountTypeFull Name
1CA4Ligand/IonCALCIUM ION
2CL24Ligand/IonCHLORIDE ION
3NA6Ligand/IonSODIUM ION
Biological Unit 1 (0, 0)
No.NameCountTypeFull Name
1CA-1Ligand/IonCALCIUM ION
2CL-1Ligand/IonCHLORIDE ION
3NA-1Ligand/IonSODIUM ION
Biological Unit 2 (0, 0)
No.NameCountTypeFull Name
1CA-1Ligand/IonCALCIUM ION
2CL-1Ligand/IonCHLORIDE ION
3NA-1Ligand/IonSODIUM ION
Biological Unit 3 (0, 0)
No.NameCountTypeFull Name
1CA-1Ligand/IonCALCIUM ION
2CL-1Ligand/IonCHLORIDE ION
3NA-1Ligand/IonSODIUM ION

(-) Sites  (29, 29)

Asymmetric Unit (29, 29)
No.NameEvidenceResiduesDescription
01AC1SOFTWAREGLN B:2 , ASP B:41 , LEU B:75 , ASN B:77 , ILE B:79BINDING SITE FOR RESIDUE CA B 276
02AC2SOFTWAREGLN A:2 , ASP A:41 , LEU A:75 , ASN A:77 , ILE A:79BINDING SITE FOR RESIDUE CA A 276
03AC5SOFTWAREGLU A:54 , PRO A:55 , SER A:56 , LYS A:94BINDING SITE FOR RESIDUE CL A 278
04AC6SOFTWAREALA A:48 , SER A:49BINDING SITE FOR RESIDUE CL A 279
05AC7SOFTWAREHIS C:42 , ARG D:106BINDING SITE FOR RESIDUE CL D 183
06AC8SOFTWARETRP A:6BINDING SITE FOR RESIDUE CL A 280
07AC9SOFTWAREPRO B:5 , TRP B:6BINDING SITE FOR RESIDUE CL B 277
08BC1SOFTWAREGLY A:80BINDING SITE FOR RESIDUE CL A 281
09BC2SOFTWAREHIS C:29 , HIS C:171BINDING SITE FOR RESIDUE CL C 183
10BC3SOFTWAREARG B:10 , ASN B:183BINDING SITE FOR RESIDUE CL B 278
11BC4SOFTWAREGLN B:12 , PRO B:14 , ALA B:15BINDING SITE FOR RESIDUE CL B 280
12BC5SOFTWARESER A:156 , LYS C:72 , SER C:93BINDING SITE FOR RESIDUE CL C 184
13BC6SOFTWAREGLN A:137BINDING SITE FOR RESIDUE CL A 282
14BC7SOFTWAREGLN A:206 , SER A:216 , GLN D:149BINDING SITE FOR RESIDUE CL A 283
15BC8SOFTWAREGLN B:206 , SER B:216 , GLN C:149 , THR C:167BINDING SITE FOR RESIDUE CL B 281
16BC9SOFTWAREILE A:165 , ARG A:170 , ALA A:194 , GLY A:195BINDING SITE FOR RESIDUE CL A 284
17CC1SOFTWAREARG A:10 , ASN A:183BINDING SITE FOR RESIDUE CL A 285
18CC2SOFTWAREARG A:19 , SER B:259 , THR B:260 , ASN B:261BINDING SITE FOR RESIDUE CL A 286
19CC3SOFTWAREASN B:155 , GLY B:219 , SER B:221BINDING SITE FOR RESIDUE CL B 282
20CC4SOFTWAREARG C:106 , HIS D:42BINDING SITE FOR RESIDUE CL C 185
21CC5SOFTWAREASN C:19 , ARG C:61 , ARG C:85BINDING SITE FOR RESIDUE CL C 186
22CC6SOFTWAREHIS D:39 , ARG D:41 , PRO D:44 , PHE D:46BINDING SITE FOR RESIDUE CL D 185
23CC7SOFTWAREGLY A:211 , SER A:212BINDING SITE FOR RESIDUE CL A 287
24CC8SOFTWAREASN B:204 , SER B:216 , GLN C:149BINDING SITE FOR RESIDUE NA B 283
25CC9SOFTWAREALA A:194 , LEU A:196BINDING SITE FOR RESIDUE NA A 288
26DC1SOFTWAREASN A:204 , SER A:216 , GLN D:149BINDING SITE FOR RESIDUE NA A 289
27DC2SOFTWAREALA B:169 , TYR B:171 , ALA B:174BINDING SITE FOR RESIDUE NA B 284
28DC3SOFTWAREALA A:169 , TYR A:171 , ALA A:174BINDING SITE FOR RESIDUE NA A 290
29DC4SOFTWAREALA C:134 , HIS C:137BINDING SITE FOR RESIDUE NA C 187

(-) SS Bonds  (4, 4)

Asymmetric Unit
No.Residues
1C:43 -C:90
2C:144 -C:148
3D:43 -D:90
4D:144 -D:148

(-) Cis Peptide Bonds  (9, 9)

Asymmetric Unit
No.Residues
1Tyr A:167 -Pro A:168
2Tyr B:167 -Pro B:168
3Cys D:43 -Pro D:44
4Leu D:157 -Lys D:158
5Glu D:168 -Pro D:169
6Pro D:180 -Ala D:181
7Cys C:43 -Pro C:44
8Lys C:158 -Gly C:159
9Glu C:168 -Pro C:169

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3BX1)

(-) PROSITE Motifs  (4, 8)

Asymmetric Unit (4, 8)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1SOYBEAN_KUNITZPS00283 Soybean trypsin inhibitor (Kunitz) protease inhibitors family signature.IAAS_HORVU28-44
 		  2C:6-22
D:6-22
2SUBTILASE_ASPPS00136 Serine proteases, subtilase family, aspartic acid active site.SUBS_BACLE28-38
 		  2A:28-39
B:28-39
3SUBTILASE_HISPS00137 Serine proteases, subtilase family, histidine active site.SUBS_BACLE62-72
 		  2A:64-74
B:64-74
4SUBTILASE_SERPS00138 Serine proteases, subtilase family, serine active site.SUBS_BACLE213-223
 		  2A:219-229
B:219-229
Biological Unit 1 (4, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1SOYBEAN_KUNITZPS00283 Soybean trypsin inhibitor (Kunitz) protease inhibitors family signature.IAAS_HORVU28-44
 		  1C:6-22
-
2SUBTILASE_ASPPS00136 Serine proteases, subtilase family, aspartic acid active site.SUBS_BACLE28-38
 		  1A:28-39
-
3SUBTILASE_HISPS00137 Serine proteases, subtilase family, histidine active site.SUBS_BACLE62-72
 		  1A:64-74
-
4SUBTILASE_SERPS00138 Serine proteases, subtilase family, serine active site.SUBS_BACLE213-223
 		  1A:219-229
-
Biological Unit 2 (4, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1SOYBEAN_KUNITZPS00283 Soybean trypsin inhibitor (Kunitz) protease inhibitors family signature.IAAS_HORVU28-44
 		  1-
D:6-22
2SUBTILASE_ASPPS00136 Serine proteases, subtilase family, aspartic acid active site.SUBS_BACLE28-38
 		  1-
B:28-39
3SUBTILASE_HISPS00137 Serine proteases, subtilase family, histidine active site.SUBS_BACLE62-72
 		  1-
B:64-74
4SUBTILASE_SERPS00138 Serine proteases, subtilase family, serine active site.SUBS_BACLE213-223
 		  1-
B:219-229
Biological Unit 3 (4, 16)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1SOYBEAN_KUNITZPS00283 Soybean trypsin inhibitor (Kunitz) protease inhibitors family signature.IAAS_HORVU28-44
 		  4C:6-22
D:6-22
2SUBTILASE_ASPPS00136 Serine proteases, subtilase family, aspartic acid active site.SUBS_BACLE28-38
 		  4A:28-39
B:28-39
3SUBTILASE_HISPS00137 Serine proteases, subtilase family, histidine active site.SUBS_BACLE62-72
 		  4A:64-74
B:64-74
4SUBTILASE_SERPS00138 Serine proteases, subtilase family, serine active site.SUBS_BACLE213-223
 		  4A:219-229
B:219-229

(-) Exons   (0, 0)

(no "Exon" information available for 3BX1)

(-) Sequences/Alignments

Asymmetric 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:269
 aligned with SUBS_BACLE | P29600 from UniProtKB/Swiss-Prot  Length:269

    Alignment length:269
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260         
           SUBS_BACLE     1 AQSVPWGISRVQAPAAHNRGLTGSGVKVAVLDTGISTHPDLNIRGGASFVPGEPSTQDGNGHGTHVAGTIAALNNSIGVLGVAPSAELYAVKVLGASGSGSVSSIAQGLEWAGNNGMHVANLSLGSPSPSATLEQAVNSATSRGVLVVAASGNSGAGSISYPARYANAMAVGATDQNNNRASFSQYGAGLDIVAPGVNVQSTYPGSTYASLNGTSMATPHVAGAAALVKQKNPSWSNVQIRNHLKNTATSLGSTNLYGSGLVNAEAATR 269
               SCOP domains d3bx1a_ A: automated matches                                                                                                                                                                                                                                                  SCOP domains
               CATH domains 3bx1A00 A:1-275  [code=3.40.50.200, no name defined]                                                                                                                                                                                                                          CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhhhhhhhhhhh........eeeeee..........eeeeee............hhhhhhhhhhhh..............eeeeee......eehhhhhhhhhhhhhhh...eeee.......hhhhhhhhhhhhhh..eeeee.................eeeeeee...............eeeeee...eeeee...eeeee.hhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhh....hhhhhh....hhhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) ---------------------------SUBTILASE_A--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                PROSITE (1) -------------------------------------------------------------SUBTILASE_H--------------------------------------------------------------------------------------------------------------------------------------------SUBTILASE_S---------------------------------------------- PROSITE (1)
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3bx1 A   1 AQSVPWGISRVQAPAAHNRGLTGSGVKVAVLDTGISTHPDLNIRGGASFVPGEPSTQDGNGHGTHVAGTIAALNNSIGVLGVAPSAELYAVKVLGASGSGSVSSIAQGLEWAGNNGMHVANLSLGSPSPSATLEQAVNSATSRGVLVVAASGNSGAGSISYPARYANAMAVGATDQNNNRASFSQYGAGLDIVAPGVNVQSTYPGSTYASLNGTSMATPHVAGAAALVKQKNPSWSNVQIRNHLKNTATSLGSTNLYGSGLVNAEAATR 275
                                    10        20        30     || 41        51     || 62        72        82        92       102       112       122       132       142       152      |166       176       186       196       206       216       226       236       246       256       266         
                                                              36|                 57|                                                                                                 159|                                                                                                               
                                                               38                  59                                                                                                  164                                                                                                               


Chain B from PDB  Type:PROTEIN  Length:269
 aligned with SUBS_BACLE | P29600 from UniProtKB/Swiss-Prot  Length:269

    Alignment length:269
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260         
           SUBS_BACLE     1 AQSVPWGISRVQAPAAHNRGLTGSGVKVAVLDTGISTHPDLNIRGGASFVPGEPSTQDGNGHGTHVAGTIAALNNSIGVLGVAPSAELYAVKVLGASGSGSVSSIAQGLEWAGNNGMHVANLSLGSPSPSATLEQAVNSATSRGVLVVAASGNSGAGSISYPARYANAMAVGATDQNNNRASFSQYGAGLDIVAPGVNVQSTYPGSTYASLNGTSMATPHVAGAAALVKQKNPSWSNVQIRNHLKNTATSLGSTNLYGSGLVNAEAATR 269
               SCOP domains d3bx1b_ B: automated matches                                                                                                                                                                                                                                                  SCOP domains
               CATH domains 3bx1B00 B:1-275  [code=3.40.50.200, no name defined]                                                                                                                                                                                                                          CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhhhhhhhhhhhh.......eeeeee..........eeeeee............hhhhhhhhhhhh..............eeeeee......eehhhhhhhhhhhhhhh...eeee.......hhhhhhhhhhhhhh..eeeee.................eeeeeee.................eeee...eeeee...eeeeeehhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhh....hhhhhh........... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) ---------------------------SUBTILASE_A--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                PROSITE (1) -------------------------------------------------------------SUBTILASE_H--------------------------------------------------------------------------------------------------------------------------------------------SUBTILASE_S---------------------------------------------- PROSITE (1)
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3bx1 B   1 AQSVPWGISRVQAPAAHNRGLTGSGVKVAVLDTGISTHPDLNIRGGASFVPGEPSTQDGNGHGTHVAGTIAALNNSIGVLGVAPSAELYAVKVLGASGSGSVSSIAQGLEWAGNNGMHVANLSLGSPSPSATLEQAVNSATSRGVLVVAASGNSGAGSISYPARYANAMAVGATDQNNNRASFSQYGAGLDIVAPGVNVQSTYPGSTYASLNGTSMATPHVAGAAALVKQKNPSWSNVQIRNHLKNTATSLGSTNLYGSGLVNAEAATR 275
                                    10        20        30     || 41        51     || 62        72        82        92       102       112       122       132       142       152      |166       176       186       196       206       216       226       236       246       256       266         
                                                              36|                 57|                                                                                                 159|                                                                                                               
                                                               38                  59                                                                                                  164                                                                                                               


Chain C from PDB  Type:PROTEIN  Length:181
 aligned with IAAS_HORVU | P07596 from UniProtKB/Swiss-Prot  Length:203

    Alignment length:181
                                    32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202 
           IAAS_HORVU    23 ADPPPVHDTDGHELRADANYYVLSANRAHGGGLTMAPGHGRHCPLFVSQDPNGQHDGFPVRITPYGVAPSDKIIRLSTDVRISFRAYTTCLQSTEWHIDSELAAGRRHVITGPVKDPSPSGRENAFRIEKYSGAEVHEYKLMSCGDWCQDLGVFRDLKGGAWFLGATEPYHVVVFKKAPPA 203
               SCOP domains d3bx1c_ C: Amylase/subtilisin inhibitor                                                                                                                                               SCOP domains
               CATH domains 3bx1C00 C:1-181  [code=2.80.10.50, no name defined]                                                                                                                                   CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..................eeeeee.hhhhh..eeee.........eeee.........eeeeee...............eeeee..ee.......eee......ee..eee.........hhhh.eeeee........eeeeee...eee.eee........eee.ee....eeeee.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----SOYBEAN_KUNITZ   --------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3bx1 C   1 ADPPPVHDTDGHELRADANYYVLSANRAHGGGLTMAPGHGRHCPLFVSQDPNGQHDGFPVRITPYGVAPSDKIIRLSTDVRISFRAYTTCLQSTEWHIDSELAAGRRHVITGPVKDPSPSGRENAFRIEKYSGAEVHEYKLMSCGDWCQDLGVFRDLKGGAWFLGATEPYHVVVFKKAPPA 181
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180 


Chain D from PDB  Type:PROTEIN  Length:181
 aligned with IAAS_HORVU | P07596 from UniProtKB/Swiss-Prot  Length:203

    Alignment length:181
                                    32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202 
           IAAS_HORVU    23 ADPPPVHDTDGHELRADANYYVLSANRAHGGGLTMAPGHGRHCPLFVSQDPNGQHDGFPVRITPYGVAPSDKIIRLSTDVRISFRAYTTCLQSTEWHIDSELAAGRRHVITGPVKDPSPSGRENAFRIEKYSGAEVHEYKLMSCGDWCQDLGVFRDLKGGAWFLGATEPYHVVVFKKAPPA 203
               SCOP domains d3bx1d_ D: Amylase/subtilisin inhibitor                                                                                                                                               SCOP domains
               CATH domains 3bx1D00 D:1-181  [code=2.80.10.50, no name defined]                                                                                                                                   CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...................eeeee.hhhhh..eeee.........eeee..........eeeee...............eeeee..ee........ee..........ee...............eeeee........eeeeee...eee.eee.......eeee.ee...eeeeee.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----SOYBEAN_KUNITZ   --------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3bx1 D   1 ADPPPVHDTDGHELRADANYYVLSANRAHGGGLTMAPGHGRHCPLFVSQDPNGQHDGFPVRITPYGVAPSDKIIRLSTDVRISFRAYTTCLQSTEWHIDSELAAGRRHVITGPVKDPSPSGRENAFRIEKYSGAEVHEYKLMSCGDWCQDLGVFRDLKGGAWFLGATEPYHVVVFKKAPPA 181
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180
   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  (2, 4)

Asymmetric Unit
(-)
Class: All beta proteins (24004)
(-)
Class: Alpha and beta proteins (a/b) (23833)

(-) CATH Domains  (2, 4)

Asymmetric Unit
(-)
Class: Alpha Beta (26913)
(-)
Class: Mainly Beta (13760)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 3BX1)

(-) Gene Ontology  (14, 14)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (SUBS_BACLE | P29600)
molecular function
    GO:0016787    hydrolase activity    Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0008233    peptidase activity    Catalysis of the hydrolysis of a peptide bond. A peptide bond is a covalent bond formed when the carbon atom from the carboxyl group of one amino acid shares electrons with the nitrogen atom from the amino group of a second amino acid.
    GO:0004252    serine-type endopeptidase activity    Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
    GO:0008236    serine-type peptidase activity    Catalysis of the hydrolysis of peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
biological process
    GO:0006508    proteolysis    The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.
    GO:0030435    sporulation resulting in formation of a cellular spore    The process in which a relatively unspecialized cell acquires the specialized features of a cellular spore, a cell form that can be used for dissemination, for survival of adverse conditions because of its heat and dessication resistance, and/or for reproduction.
cellular component
    GO:0005576    extracellular region    The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.

Chain C,D   (IAAS_HORVU | P07596)
molecular function
    GO:0015066    alpha-amylase inhibitor activity    Stops, prevents or reduces the activity of alpha-amylase.
    GO:0004866    endopeptidase inhibitor activity    Stops, prevents or reduces the activity of an endopeptidase, any enzyme that hydrolyzes nonterminal peptide bonds in polypeptides.
    GO:0030414    peptidase inhibitor activity    Stops, prevents or reduces the activity of a peptidase, any enzyme that catalyzes the hydrolysis peptide bonds.
    GO:0004867    serine-type endopeptidase inhibitor activity    Stops, prevents or reduces the activity of serine-type endopeptidases, enzymes that catalyze the hydrolysis of nonterminal peptide bonds in a polypeptide chain; a serine residue (and a histidine residue) are at the active center of the enzyme.
biological process
    GO:0010951    negative regulation of endopeptidase activity    Any process that decreases the frequency, rate or extent of endopeptidase activity, the endohydrolysis of peptide bonds within proteins.
    GO:0010466    negative regulation of peptidase activity    Any process that stops or reduces the rate of peptidase activity, the hydrolysis of peptide bonds within proteins.

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  SUBS_BACLE | P29600
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  3.4.21.62
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 Related Entries

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        IAAS_HORVU | P07596: 1ava 2iwt
        SUBS_BACLE | P29600: 1c9j 1c9m 1c9n 1gci 1iav 1jea 1ndq 1ndu 1q5p 1svn 1tk2 4cfy 4cfz 4cg0 5aqe 5arb 5arc 5ard

(-) Related Entries Specified in the PDB File

(no "Related Entries Specified in the PDB File" available for 3BX1)