6BVC
Crystal structure of AAC(3)-Ia in complex with coenzyme A
Summary for 6BVC
| Entry DOI | 10.2210/pdb6bvc/pdb |
| Descriptor | Aminoglycoside-(3)-N-acetyltransferase, COENZYME A, CHLORIDE ION, ... (6 entities in total) |
| Functional Keywords | aminoglycoside, antibiotic, resistance, gcn5 family n-acetyltransferase, gnat, alpha/beta protein, coenzyme a, coa, structural genomics, center for structural genomics of infectious diseases, csgid, transferase |
| Biological source | Serratia marcescens |
| Total number of polymer chains | 1 |
| Total formula weight | 21784.75 |
| Authors | Stogios, P.J.,Evdokimova, E.,Wawrzak, Z.,Savchenko, A.,Joachimiak, A.,Satchell, K.,Center for Structural Genomics of Infectious Diseases (CSGID) (deposition date: 2017-12-12, release date: 2017-12-27, Last modification date: 2026-08-19) |
| Primary citation | Popov, G.,Evdokimova, E.,Stogios, P.J.,Savchenko, A. Structure of the full-length Serratia marcescens acetyltransferase AAC(3)-Ia in complex with coenzyme A. Protein Sci., 29:803-808, 2020 Cited by PubMed Abstract: Acyl-coenzyme A-dependent N-acetyltransferases (AACs) catalyze the modification of aminoglycosides rendering the bacteria carrying such enzymes resistant to this class of antibiotics. Here we present the crystal structure of AAC(3)-Ia enzyme from Serratia marcescens in complex with coenzyme A determined to 1.8 Å resolution. This enzyme served as an architype for the AAC enzymes targeting the amino group at Position 3 of aminoglycoside main aminocyclitol ring. The structure of this enzyme has been previously determined only in truncated form and was interpreted as distinct from subsequently characterized AACs. The reason for the unusual arrangement of secondary structure elements of AAC(3)-Ia was not further investigated. By determining the full-length structure of AAC(3)-Ia we establish that this enzyme adopts the canonical AAC fold conserved across this family and it does not undergo through significant rearrangement of secondary structure elements upon ligand binding as was proposed previously. In addition, our results suggest that the C-terminal tail in AAC(3)-Ia monomer forms intramolecular hydrogen bonds that contributes to formation of stable dimer, representing the predominant oligomeric state for this enzyme. PubMed: 31876342DOI: 10.1002/pro.3811 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (1.808 Å) |
Structure validation
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