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(-) Description

Title :  STRUCTURAL BASIS FOR THE EXOCELLULASE ACTIVITY OF THE CELLOBIOHYDROLASE CBHA FROM C. THERMOCELLUM
 
Authors :  F. D. Schubot, I. A. Kataeva, J. Chang, A. K. Shah, L. G. Ljungdahl, J. P. Rose, B. C. Wang
Date :  04 Dec 03  (Deposition) - 12 Feb 04  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.10
Chains :  Asym./Biol. Unit :  A
Keywords :  Hydrolase, Glycoside Hydrolase, Family 9, Cellobiohydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  F. D. Schubot, I. A. Kataeva, J. Chang, A. K. Shah, L. G. Ljungdahl, J. P. Rose, B. C. Wang
Structural Basis For The Exocellulase Activity Of The Cellobiohydrolase Cbha From Clostridium Thermocellum
Biochemistry V. 43 1163 2004
PubMed-ID: 14756552  |  Reference-DOI: 10.1021/BI030202I

(-) Compounds

Molecule 1 - CELLULOSE 1,4-BETA-CELLOBIOSIDASE
    Chains: A
    EC Number: 3.2.1.4
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PET-21B(+)
    Expression System Strain: BL-21
    Expression System Taxid: 562
    Expression System Vector: PET
    Fragment: CATALYTIC DOMAIN, RESIDUES 208-816
    Organism Scientific: CLOSTRIDIUM THERMOCELLUM
    Organism Taxid: 1515
    Synonym: CELLOBIOHYDROLASE CBHA, EXOGLUCANASE, EXOCELLOBIOHYDROLASE, 1,4-BETA-CELLOBIOHYDROLASE

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 1UT9)

(-) Sites  (0, 0)

(no "Site" information available for 1UT9)

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1UT9)

(-) Cis Peptide Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1Met A:330 -Pro A:331
2Gly A:352 -Asp A:353

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1UT9)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1UT9)

(-) Exons   (0, 0)

(no "Exon" information available for 1UT9)

(-) 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:605
 aligned with Q6RSN8_CLOTM | Q6RSN8 from UniProtKB/TrEMBL  Length:607

    Alignment length:609
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       607   
                                    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       551       561       571       581       591       601     |   
         Q6RSN8_CLOTM     2 ILPQPDVRVNQVGYLPEGKKVATVVCNSTQPVKWQLKNAAGVVVLEGYTEPKGLDKDSQDYVHWLDFSDFATEGIGYYFELPTVNSPTNYSHPFDIRKDIYTQMKYDALAFFYHKRSGIPIEMPYAGGEQWTRPAGHIGIEPNKGDTNVPTWPQDDEYAGIPQKNYTKDVTGGWYDAGDHGKYVVNGGIAVWTLMNMYERAKIRGLDNWGPYRDGGMNIPEQNNGYPDILDEARWEIEFFKKMQVTEKEDPSIAGMVHHKIHDFRWTALGMLPHEDPQPRYLRPVSTAATLNFAATLAQSARLWKDYDPTFAADCLEKAEIAWQAALKHPDIYAEYTPGSGGPGGGPYNDDYVGDEFYWAACELYVTTGKDEYKNYLMNSPHYLEMPAKMGENGGANGEDNGLWGCFTWGTTQGLGTITLALVENGLPATDIQKARNNIAKAADRWLENIEEQGYRLPIKQAEDERGGYPWGSNSFILNQMIVMGYAYDFTGDSKYLDGMFDGISYLLGRNAMDQSYVTGYGERPLQNPHDRFWTPQTSKRFPAPPPGIISGGPNSRFEDPTINAAVKKDTPPQKCFIDHTDSWGTNEITVNWNAPFAWVTAYLDE---   -
               SCOP domains d1ut9a2 A:208-305 Cellulose 1,4-beta-cellobiosidase CbhA, precatalytic domain                     d1ut9a1 A:306-816 Cellulose 1,4-beta-cellobiosidase CbhA                                                                                                                                                                                                                                                                                                                                                                                                                                                                        SCOP domains
               CATH domains 1ut9A01 A:208-305 Immunoglobulins                                                                 1ut9A02 A:306-816  [code=1.50.10.10, no name defined]                                                                                                                                                                                                                                                                                                                                                                                                                                                                           CATH domains
               Pfam domains CelD_N-1ut9A02 A:208-294                                                               ------------Glyco_hydro_9-1ut9A01 A:307-809                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        ------- Pfam domains
         Sec.struct. author ......ee....ee......eeeee.......eeeee.....eeeeee.eeeee......eeeeee.......eeeeeee.............eee......hhhhhhhhhhhhh............hhhhh................ee................ee.............eehhhhhhhhhhhhhhhhhhhhh....hhhhh.............hhhhhhhhhhhhhhhhhh.....hhhhh..ee.eeee........hhhhh...eee..eehhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhh.......................hhhhhhhhhhhhhhhhhhhhhhhhhhh............----.hhhhh..........hhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhh...................hhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhh...................................................hhhhhhhh....hhhhh......hhhhhh.hhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1ut9 A 208 ILPQPDVRVNQVGYLPEGKKVATVVCNSTQPVKWQLKNAAGVVVLEGYTEPKGLDKDSQDYVHWLDFSDFATEGIGYYFELPTVNSPTNYSHPFDIRKDIYTQMKYDALAFFYHKRSGIPIEMPYAGGEQWTRPAGHIGIEPNKGDTNVPTWPQDDEYAGIPQKNYTKDVTGGWYDAGDHGKYVVNGGIAVWTLMNMYERAKIRGLDNWGPYRDGGMNIPEQNNGYPDILDEARWEIEFFKKMQVTEKEDPSIAGMVHHKIHDFRWTALGMLPHEDPQPRYLRPVSTAATLNFAATLAQSARLWKDYDPTFAADCLEKAEIAWQAALKHPDIYAEYTPGSGGPGGGPYNDDYVGDEFYWAACELYVTTGKDEYKNYLMNSPHYLEMPAKMG----ANGEDNGLWGCFTWGTTQGLGTITLALVENGLPATDIQKARNNIAKAADRWLENIEEQGYRLPIKQAEDERGGYPWGSNSFILNQMIVMGYAYDFTGDSKYLDGMFDGISYLLGRNAMDQSYVTGYGERPLQNPHDRFWTPQTSKRFPAPPPGIISGGPNSRFEDPTINAAVKKDTPPQKCFIDHTDSWSTNEITVNWNAPFAWVTAYLDQYTD 816
                                   217       227       237       247       257       267       277       287       297       307       317       327       337       347       357       367       377       387       397       407       417       427       437       447       457       467       477       487       497       507       517       527       537       547       557       567       577       587       597|    | 607       617       627       637       647       657       667       677       687       697       707       717       727       737       747       757       767       777       787       797       807         
                                                                                                                                                                                                                                                                                                                                                                                                                                598  603
   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, 2)

Asymmetric/Biological Unit
(-)
Class: All alpha proteins (14657)
(-)
Class: All beta proteins (24004)

(-) CATH Domains  (2, 2)

Asymmetric/Biological Unit
(-)
Class: Mainly Alpha (13335)
(-)
Class: Mainly Beta (13760)

(-) Pfam Domains  (2, 2)

Asymmetric/Biological Unit
(-)
Clan: 6_Hairpin (120)
(-)
Clan: no clan defined [family: CelD_N] (3)

(-) Gene Ontology  (10, 10)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (Q6RSN8_CLOTM | Q6RSN8)
molecular function
    GO:0003824    catalytic activity    Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic.
    GO:0008810    cellulase activity    Catalysis of the endohydrolysis of (1->4)-beta-D-glucosidic linkages in cellulose, lichenin and cereal beta-D-glucans.
    GO:0016162    cellulose 1,4-beta-cellobiosidase activity    Catalysis of the hydrolysis of (1->4)-beta-D-glucosidic linkages in cellulose and cellotetraose, releasing cellobiose from the non-reducing ends of the chains.
    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.

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    Gly A:352 - Asp A:353   [ RasMol ]  
    Met A:330 - Pro A:331   [ RasMol ]  
 

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