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

    School of Pharmacy, Department of Pharmaceutical Sciences, University of Maryland Eastern Shore, Princess Anne, Maryland.,Department of BioSciences, Rice University, Houston, Texas, 77005.,Department of Biochemistry, University of Wisconsin-Madison, Madison, Wisconsin, 53706.,Department of Chemistry, Rice University, Houston, Texas, 77005.,Midwest Center for Structural Genomics and Structural Biology Center, Biosciences Division, Argonne National Laboratory, Argonne, Illinois, 60439.,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