THE CRYSTAL STRUCTURE OF EXOENZYME C3 FROM CLOSTRIDIUM BOTULINUM
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
| Chains | Domain Info | Class | Fold | Superfamily | Family | Domain | Species | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| A | d1g24a_ | Alpha and beta proteins (a+b) | ADP-ribosylation | ADP-ribosylation | ADP-ribosylating toxins | Exoenzyme c3 | (Clostridium botulinum ) [TaxId: 1491 ], | SCOPe (2.08) |
| D | d1g24d_ | Alpha and beta proteins (a+b) | ADP-ribosylation | ADP-ribosylation | ADP-ribosylating toxins | Exoenzyme c3 | (Clostridium botulinum ) [TaxId: 1491 ], | SCOPe (2.08) |
| C | d1g24c_ | Alpha and beta proteins (a+b) | ADP-ribosylation | ADP-ribosylation | ADP-ribosylating toxins | Exoenzyme c3 | (Clostridium botulinum ) [TaxId: 1491 ], | SCOPe (2.08) |
| B | d1g24b_ | Alpha and beta proteins (a+b) | ADP-ribosylation | ADP-ribosylation | ADP-ribosylating toxins | Exoenzyme c3 | (Clostridium botulinum ) [TaxId: 1491 ], | SCOPe (2.08) |
Domain Annotation: ECOD Classification ECOD Database Homepage
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| A | Met_synt_B12 | e1g24A1 | A: beta barrels | X: ETN0001 domain-like | H: ETN0001 domain-like | T: Mss4-like | F: Met_synt_B12 | ECOD (v294.2) |
| D | Met_synt_B12 | e1g24D1 | A: beta barrels | X: ETN0001 domain-like | H: ETN0001 domain-like | T: Mss4-like | F: Met_synt_B12 | ECOD (v294.2) |
| C | Met_synt_B12 | e1g24C1 | A: beta barrels | X: ETN0001 domain-like | H: ETN0001 domain-like | T: Mss4-like | F: Met_synt_B12 | ECOD (v294.2) |
| B | Met_synt_B12 | e1g24B1 | A: beta barrels | X: ETN0001 domain-like | H: ETN0001 domain-like | T: Mss4-like | F: Met_synt_B12 | ECOD (v294.2) |
Domain Annotation: CATH CATH Database Homepage
| Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
|---|---|---|---|---|---|---|
| A | 3.90.176.10 | Alpha Beta | Alpha-Beta Complex | Toxin ADP-ribosyltransferase | Chain A, domain 1 | CATH (4.3.0) |
| D | 3.90.176.10 | Alpha Beta | Alpha-Beta Complex | Toxin ADP-ribosyltransferase | Chain A, domain 1 | CATH (4.3.0) |
| C | 3.90.176.10 | Alpha Beta | Alpha-Beta Complex | Toxin ADP-ribosyltransferase | Chain A, domain 1 | CATH (4.3.0) |
| B | 3.90.176.10 | Alpha Beta | Alpha-Beta Complex | Toxin ADP-ribosyltransferase | Chain A, domain 1 | CATH (4.3.0) |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
| Chains | Polymer | Molecular Function | Biological Process | Cellular Component |
|---|---|---|---|---|
| EXOENZYME C3 | - |
InterPro: Protein Family Classification InterPro Database Homepage
Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage
| Chains | Enzyme Name | Description | Catalytic Residues |
|---|---|---|---|
| mono-ADP-ribosyltransferase C3 M-CSA #824 | Clostridium boltulinum C3 exoenzyme catalyses the transfer of the ADP-ribose moiety of NAD onto asparagine 41 of the small GTP-binding protein Rho. This ADP-ribosylation inactivates Rho, blocking Rho activity in regulating the cytoskeleton and leading to cytoskeleton depolymerisation. The protein synthesis inhibitors (inactivate the eukaryotic elongation factor 2 eEF2) diptheria toxin from Corynebacterium diphtheriae and exotoxin A (ETA) from Pseudomonas aeruginosa are also ADP-ribosyltransferases, contain a conserved Glu and thought to proceed through the same catalytic mechanism. | Defined by 2 residues: SER:A-134 [auth A-174]GLU:A-174 [auth A-214] | EC: 2.4.2 (PDB Primary Data) |
