REFINED CRYSTAL STRUCTURE OF TYPE III CHLORAMPHENICOL ACETYLTRANSFERASE AT 1.75 ANGSTROMS RESOLUTION
External Resource: Annotation
- Domain Annotation: SCOP/SCOPe Classification
- Domain Annotation: SCOP2 Classification
- Domain Annotation: ECOD Classification
- Domain Annotation: CATH
- AMR Gene: CARD Annotation
- AMR Gene Family: CARD Annotation
- Gene Ontology: Gene Product Annotation
- InterPro: Protein Family Classification
- Structure Motif: Primary M-CSA Annotation
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
| Chains | Domain Info | Class | Fold | Superfamily | Family | Domain | Species | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| A | d3claa_ | Alpha and beta proteins (a/b) | CoA-dependent acyltransferases | CoA-dependent acyltransferases | CAT-like | Chloramphenicol acetyltransferase, CAT | (Escherichia coli ) [TaxId: 562 ], | SCOPe (2.08) |
Domain Annotation: ECOD Classification ECOD Database Homepage
Domain Annotation: CATH CATH Database Homepage
| Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
|---|---|---|---|---|---|---|
| A | 3.30.559.10 | Alpha Beta | 2-Layer Sandwich | Chloramphenicol Acetyltransferase | Chloramphenicol acetyltransferase-like domain | CATH (4.3.0) |
AMR Gene: CARD Annotation CARD Database Homepage
| Chains | Accession | Short Name | Description | Provenance Source (Version) |
|---|---|---|---|---|
| ARO:3002685 | catIII | catIII is a plasmid-encoded variant of the cat gene found in Shigella flexneri. | CARD (4.0.1) |
AMR Gene Family: CARD Annotation CARD Database Homepage
| Chains | Accession | Gene Family | Drug Class | Resistance Machanism | Provenance Source (Version) |
|---|---|---|---|---|---|
| ARO:3000122 | chloramphenicol acetyltransferase (CAT) | phenicol antibiotic | antibiotic inactivation | CARD (4.0.1) |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
| Chains | Polymer | Molecular Function | Biological Process | Cellular Component |
|---|---|---|---|---|
| TYPE III CHLORAMPHENICOL ACETYLTRANSFERASE | - |
InterPro: Protein Family Classification InterPro Database Homepage
| Chains | Accession | Name | Type |
|---|---|---|---|
| IPR023213 | Chloramphenicol acetyltransferase-like domain superfamily | Homologous Superfamily | |
| IPR018372 | Chloramphenicol acetyltransferase, active site | Active Site | |
| IPR001707 | Chloramphenicol acetyltransferase | Family |
Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage
| Chains | Enzyme Name | Description | Catalytic Residues |
|---|---|---|---|
| chloramphenicol O-acetyltransferase M-CSA #934 | Chloramphenicol acetyltransferase (CAT) [PMID:1867721] catalyses the acetyl-CoA dependent acetylation of chloramphenicol (Cm), an antibiotic which inhibits prokaryotic peptidyltransferase activity. Acetylation of Cm by CAT inactivates the antibiotic. A histidine residue, located in the C-terminal section of the enzyme, plays a central role in its catalytic mechanism. CAT enzymes are divided into three classes: CATI, CATII, and CATIII, with the enzymes of all three classes catalysing acetyl transfer to CAM to yield 3-O-acetyl-CAM. This entry represents the type III protein, although the mechanism is likely to be similar between the three classes. | Defined by 4 residues: ARG:A-13 [auth A-18]THR:A_3-168 [auth A_3-174]HIS:A-189 [auth A-195]ASP:A-193 [auth A-199] | EC: 2.3.1.28 (PDB Primary Data) |
