4XAU

Crystal structure of AtS13 from Actinomadura melliaura


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.0012 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.187 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Structural characterization of AtmS13, a putative sugar aminotransferase involved in indolocarbazole AT2433 aminopentose biosynthesis.

Singh, S.Kim, Y.Wang, F.Bigelow, L.Endres, M.Kharel, M.K.Babnigg, G.Bingman, C.A.Joachimiak, A.Thorson, J.S.Phillips, G.N.

(2015) Proteins 83: 1547-1554

  • DOI: 10.1002/prot.24844
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • 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 ...

    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.


    Organizational Affiliation

    Center for Pharmaceutical Research and Innovation, Pharmaceutical Sciences Division, University of Kentucky College of Pharmacy, Lexington, Kentucky, 40536-0596.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Putative aminotransferase
A, B, C, D, E, F, G
389Actinomadura melliauraMutation(s): 0 
Gene Names: atS13
Find proteins for Q0H2X1 (Actinomadura melliaura)
Go to UniProtKB:  Q0H2X1
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PLP
Query on PLP

Download SDF File 
Download CCD File 
C
PYRIDOXAL-5'-PHOSPHATE
VITAMIN B6 Phosphate
C8 H10 N O6 P
NGVDGCNFYWLIFO-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

Unit Cell:
Length (Å)Angle (°)
a = 233.149α = 90.00
b = 233.149β = 90.00
c = 460.859γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data scaling
PHENIXphasing
PDB_EXTRACTdata extraction
HKL-2000data reduction
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesU01GM098248

Revision History 

  • Version 1.0: 2014-12-24
    Type: Initial release
  • Version 1.1: 2015-06-24
    Type: Database references
  • Version 1.2: 2015-07-29
    Type: Database references
  • Version 1.3: 2015-08-26
    Type: Data collection
  • Version 1.4: 2017-09-06
    Type: Author supporting evidence, Derived calculations