4ZWV image
Deposition Date 2015-05-19
Release Date 2015-06-03
Last Version Date 2025-04-02
Entry Detail
PDB ID:
4ZWV
Keywords:
TRANSFERASE
Title:
Crystal Structure of Aminotransferase AtmS13 from Actinomadura melliaura
Biological Source:
Source Organism:
Actinomadura melliaura (Taxon ID: 360723)
Host Organism:
Escherichia coli BL21(DE3)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.50 Å
R-Value Free:
0.16
R-Value Work:
0.14
R-Value Observed:
0.14
Space Group:
C 1 2 1
4ZWV validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Putative aminotransferase
Gene (Uniprot):atS13
Chain IDs:A, B
Chain Length:372
Number of Molecules:2
Biological Source:Actinomadura melliaura
UniProt ID:Q0H2X1 Pfam ID:PF01041
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
LLP A LYS modified residue
MSE A MET modified residue
Ligand Molecules
GOL
Primary Citation
Structural characterization of AtmS13, a putative sugar aminotransferase involved in indolocarbazole AT2433 aminopentose biosynthesis.
Proteins 83 1547 1554 (2015)
PMID: 26061967 DOI: 10.1002/prot.24844

Abstact

AT2433 from Actinomadura melliaura is an indolocarbazole antitumor antibiotic structurally distinguished by its unique aminodideoxypentose-containing disaccharide moiety. The corresponding sugar nucleotide-based biosynthetic pathway for this unusual sugar derives from comparative genomics where AtmS13 has been suggested as the contributing sugar aminotransferase (SAT). Determination of the AtmS13 X-ray structure at 1.50-Å resolution reveals it as a member of the aspartate aminotransferase fold type I (AAT-I). Structural comparisons of AtmS13 with homologous SATs that act upon similar substrates implicate potential active site residues that contribute to distinctions in sugar C5 (hexose vs. pentose) and/or sugar C2 (deoxy vs. hydroxyl) substrate specificity.

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Primary Citation of related structures
4ZWV