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(-) Description

Title :  HUMICOLA INSOLENS ENDOCELLULASE EGI NATIVE STRUCTURE
 
Authors :  G. J. Davies, G. Sulzenbacher, L. Mackenzie, S. G. Withers, C. Divne, T. H. F. Woldike, M. Schulein
Date :  30 Jan 98  (Deposition) - 16 Feb 99  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.20
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  B  (1x)
Biol. Unit 2:  A  (1x)
Keywords :  Endoglucanase, Hydrolase, Cellulase, Cellulose Degradation, Glycoside Hydrolase Family 7, Glycosylated Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  L. F. Mackenzie, G. Sulzenbacher, C. Divne, T. A. Jones, H. F. Woldike, M. Schulein, S. G. Withers, G. J. Davies
Crystal Structure Of The Family 7 Endoglucanase I (Cel7B) From Humicola Insolens At 2. 2 A Resolution And Identification Of The Catalytic Nucleophile By Trapping Of The Covalent Glycosyl-Enzyme Intermediate.
Biochem. J. V. 335 409 1998
PubMed-ID: 9761741
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - ENDOGLUCANASE I
    ChainsA, B
    EC Number3.2.1.4
    EngineeredYES
    Expression SystemASPERGILLUS ORYZAE
    Expression System Taxid5062
    GenePOTENTIAL
    Organism ScientificHUMICOLA INSOLENS
    Organism Taxid34413
    Other DetailsPYROGLUTAMATE POST-TRANSLATIONAL MODIFICATION AT RESIDUE 1 N-LINKED N-ACETYLGLUCOSAMINE ON RESIDUE ASN 247
    SynonymCELLULASE, FAMILY 7 ENDOGLUCANASE

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit AB
Biological Unit 1 (1x) B
Biological Unit 2 (1x)A 

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 6)

Asymmetric Unit (2, 6)
No.NameCountTypeFull Name
1NAG4Ligand/IonN-ACETYL-D-GLUCOSAMINE
2PCA2Mod. Amino AcidPYROGLUTAMIC ACID
Biological Unit 1 (2, 3)
No.NameCountTypeFull Name
1NAG2Ligand/IonN-ACETYL-D-GLUCOSAMINE
2PCA1Mod. Amino AcidPYROGLUTAMIC ACID
Biological Unit 2 (2, 3)
No.NameCountTypeFull Name
1NAG2Ligand/IonN-ACETYL-D-GLUCOSAMINE
2PCA1Mod. Amino AcidPYROGLUTAMIC ACID

(-) Sites  (6, 6)

Asymmetric Unit (6, 6)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREASN A:247 , ASN A:300 , LYS A:301 , GLU A:302BINDING SITE FOR RESIDUE NAG A 800
2AC2SOFTWAREASN A:89 , SER A:92 , PRO A:265 , THR A:385 , THR A:387 , HOH A:820BINDING SITE FOR RESIDUE NAG A 801
3AC3SOFTWAREGLY A:351 , ASN B:247 , ASN B:300 , LYS B:301 , GLU B:302BINDING SITE FOR RESIDUE NAG B 800
4AC4SOFTWAREPHE B:16 , ASN B:89 , ASN B:388 , ARG B:390 , HOH B:854 , HOH B:914BINDING SITE FOR RESIDUE NAG B 801
5ACIUNKNOWNGLU A:202CATALYTIC ACID/BASE.
6NUCUNKNOWNGLU A:197CATALYTIC NUCLEOPHILE AS IDENTIFIED BY 2- FLUOROCELLOBIOSE LABELING.

(-) SS Bonds  (18, 18)

Asymmetric Unit
No.Residues
1A:18 -A:24
2A:51 -A:73
3A:63 -A:69
4A:140 -A:365
5A:172 -A:195
6A:176 -A:194
7A:215 -A:234
8A:223 -A:228
9A:239 -A:315
10B:18 -B:24
11B:51 -B:73
12B:63 -B:69
13B:140 -B:365
14B:172 -B:195
15B:176 -B:194
16B:215 -B:234
17B:223 -B:228
18B:239 -B:315

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 2A39)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2A39)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 2A39)

(-) Exons   (0, 0)

(no "Exon" information available for 2A39)

(-) 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:398
 aligned with GUN1_HUMIN | P56680 from UniProtKB/Swiss-Prot  Length:402

    Alignment length:398
                                    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       270       280       290       300       310       320       330       340       350       360       370       380       390        
           GUN1_HUMIN     1 QKPGETKEVHPQLTTFRCTKRGGCKPATNFIVLDSLSHPIHRAEGLGPGGCGDWGNPPPKDVCPDVESCAKNCIMEGIPDYSQYGVTTNGTSLRLQHILPDGRVPSPRVYLLDKTKRRYEMLHLTGFEFTFDVDATKLPCGMNSALYLSEMHPTGAKSKYNPGGAYYGTGYCDAQCFVTPFINGLGNIEGKGSCCNEMDIWEANSRASHVAPHTCNKKGLYLCEGEECAFEGVCDKNGCGWNNYRVNVTDYYGRGEEFKVNTLKPFTVVTQFLANRRGKLEKIHRFYVQDGKVIESFYTNKEGVPYTNMIDDEFCEATGSRKYMELGATQGMGEALTRGMVLAMSIWWDQGGNMEWLDHGEAGPCAKGEGAPSNIVQVEPFPEVTYTNLRWGEIGSTY 398
               SCOP domains d2a39a_ A: Cellobiohydrolase I (cellulase, Endoglucanase I, CBH1)                                                                                                                                                                                                                                                                                                                                              SCOP domains
               CATH domains -2a39A00 A:2-398 1,4-Beta-D-Glucan Cellobiohydrolase I, subunit A                                                                                                                                                                                                                                                                                                                                              CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...........eeeeeeee...eeeeeeeeeee.hhh..eee.......................hhhhhhheee.....hhhh.eeee..eeeee...........eeeee..............eeeeeeee........eeeeeee..............hhhh........................eee..eee.eee......eeee.......eee.hhhh..........eee.hhhh...................eeeeeeeee.....eeeeeeeeee..eee.................hhhhhh...hhhhh..hhhhhhhhhhh..eeeeeee.......hhhh.hhh.........hhhhhhh....eeeee..eeee..... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2a39 A   1 xKPGETKEVHPQLTTFRCTKRGGCKPATNFIVLDSLSHPIHRAEGLGPGGCGDWGNPPPKDVCPDVESCAKNCIMEGIPDYSQYGVTTNGTSLRLQHILPDGRVPSPRVYLLDKTKRRYEMLHLTGFEFTFDVDATKLPCGMNSALYLSEMHPTGAKSKYNPGGAYYGTGYCDAQCFVTPFINGLGNIEGKGSCCNEMDIWEANSRASHVAPHTCNKKGLYLCEGEECAFEGVCDKNGCGWNNYRVNVTDYYGRGEEFKVNTLKPFTVVTQFLANRRGKLEKIHRFYVQDGKVIESFYTNKEGVPYTNMIDDEFCEATGSRKYMELGATQGMGEALTRGMVLAMSIWWDQGGNMEWLDHGEAGPCAKGEGAPSNIVQVEPFPEVTYTNLRWGEIGSTY 398
                            |       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       270       280       290       300       310       320       330       340       350       360       370       380       390        
                            |                                                                                                                                                                                                                                                                                                                                                                                                             
                            1-PCA                                                                                                                                                                                                                                                                                                                                                                                                         

Chain B from PDB  Type:PROTEIN  Length:398
 aligned with GUN1_HUMIN | P56680 from UniProtKB/Swiss-Prot  Length:402

    Alignment length:398
                                    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       270       280       290       300       310       320       330       340       350       360       370       380       390        
           GUN1_HUMIN     1 QKPGETKEVHPQLTTFRCTKRGGCKPATNFIVLDSLSHPIHRAEGLGPGGCGDWGNPPPKDVCPDVESCAKNCIMEGIPDYSQYGVTTNGTSLRLQHILPDGRVPSPRVYLLDKTKRRYEMLHLTGFEFTFDVDATKLPCGMNSALYLSEMHPTGAKSKYNPGGAYYGTGYCDAQCFVTPFINGLGNIEGKGSCCNEMDIWEANSRASHVAPHTCNKKGLYLCEGEECAFEGVCDKNGCGWNNYRVNVTDYYGRGEEFKVNTLKPFTVVTQFLANRRGKLEKIHRFYVQDGKVIESFYTNKEGVPYTNMIDDEFCEATGSRKYMELGATQGMGEALTRGMVLAMSIWWDQGGNMEWLDHGEAGPCAKGEGAPSNIVQVEPFPEVTYTNLRWGEIGSTY 398
               SCOP domains d2a39b_ B: Cellobiohydrolase I (cellulase, Endoglucanase I, CBH1)                                                                                                                                                                                                                                                                                                                                              SCOP domains
               CATH domains -2a39B00 B:2-398 1,4-Beta-D-Glucan Cellobiohydrolase I, subunit A                                                                                                                                                                                                                                                                                                                                              CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...........eeeeeeee...eeeeeeeeeee.hhh..eee.......................hhhhhhheee.....hhhh.eeee..eeeee...........eeeee..............eeeeeeee........eeeeeee..............hhhh........................eee..eee.eee......eeee.......eee.hhhh..........eee.hhhh...................eeeeeeeee.....eeeeeeeeee..eee.................hhhhhh...hhhhh..hhhhhhhhhhh..eeeeeee.......hhhh.hhh.........hhhhhhh....eeeee..eeee..... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2a39 B   1 xKPGETKEVHPQLTTFRCTKRGGCKPATNFIVLDSLSHPIHRAEGLGPGGCGDWGNPPPKDVCPDVESCAKNCIMEGIPDYSQYGVTTNGTSLRLQHILPDGRVPSPRVYLLDKTKRRYEMLHLTGFEFTFDVDATKLPCGMNSALYLSEMHPTGAKSKYNPGGAYYGTGYCDAQCFVTPFINGLGNIEGKGSCCNEMDIWEANSRASHVAPHTCNKKGLYLCEGEECAFEGVCDKNGCGWNNYRVNVTDYYGRGEEFKVNTLKPFTVVTQFLANRRGKLEKIHRFYVQDGKVIESFYTNKEGVPYTNMIDDEFCEATGSRKYMELGATQGMGEALTRGMVLAMSIWWDQGGNMEWLDHGEAGPCAKGEGAPSNIVQVEPFPEVTYTNLRWGEIGSTY 398
                            |       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       270       280       290       300       310       320       330       340       350       360       370       380       390        
                            1-PCA                                                                                                                                                                                                                                                                                                                                                                                                         

   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  (1, 2)

Asymmetric Unit

(-) CATH Domains  (1, 2)

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

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 2A39)

(-) Gene Ontology  (9, 9)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (GUN1_HUMIN | P56680)
molecular function
    GO:0008810    cellulase activity    Catalysis of the endohydrolysis of (1->4)-beta-D-glucosidic linkages in cellulose, lichenin and cereal beta-D-glucans.
    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:0016798    hydrolase activity, acting on glycosyl bonds    Catalysis of the hydrolysis of any glycosyl bond.
    GO:0004553    hydrolase activity, hydrolyzing O-glycosyl compounds    Catalysis of the hydrolysis of any O-glycosyl bond.
biological process
    GO:0005975    carbohydrate metabolic process    The chemical reactions and pathways involving carbohydrates, any of a group of organic compounds based of the general formula Cx(H2O)y. Includes the formation of carbohydrate derivatives by the addition of a carbohydrate residue to another molecule.
    GO:0030245    cellulose catabolic process    The chemical reactions and pathways resulting in the breakdown of cellulose, a linear beta1-4 glucan of molecular mass 50-400 kDa with the pyranose units in the -4C1 conformation.
    GO:0008152    metabolic process    The chemical reactions and pathways, including anabolism and catabolism, by which living organisms transform chemical substances. Metabolic processes typically transform small molecules, but also include macromolecular processes such as DNA repair and replication, and protein synthesis and degradation.
    GO:0000272    polysaccharide catabolic process    The chemical reactions and pathways resulting in the breakdown of a polysaccharide, a polymer of many (typically more than 10) monosaccharide residues linked glycosidically.
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.

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 Related Entries

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

UniProtKB/Swiss-Prot
        GUN1_HUMIN | P566801a39 1dym 1oji 1ojj 1ojk

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