4OVM

Crystal structure of SgcJ protein from Streptomyces carzinostaticus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.719 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.216 

wwPDB Validation 3D Report Full Report


This is version 1.6 of the entry. See complete history

Literature

Crystal structure of SgcJ, an NTF2-like superfamily protein involved in biosynthesis of the nine-membered enediyne antitumor antibiotic C-1027.

Huang, T.Chang, C.Y.Lohman, J.R.Rudolf, J.D.Kim, Y.Chang, C.Yang, D.Ma, M.Yan, X.Crnovcic, I.Bigelow, L.Clancy, S.Bingman, C.A.Yennamalli, R.M.Babnigg, G.Joachimiak, A.Phillips, G.N.Shen, B.

(2016) J.Antibiot. --: --

  • DOI: 10.1038/ja.2016.88
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Comparative analysis of the enediyne biosynthetic gene clusters revealed sets of conserved genes serving as outstanding candidates for the enediyne core. Here we report the crystal structures of SgcJ and its homologue NCS-Orf16, together with gene in ...

    Comparative analysis of the enediyne biosynthetic gene clusters revealed sets of conserved genes serving as outstanding candidates for the enediyne core. Here we report the crystal structures of SgcJ and its homologue NCS-Orf16, together with gene inactivation and site-directed mutagenesis studies, to gain insight into enediyne core biosynthesis. Gene inactivation in vivo establishes that SgcJ is required for C-1027 production in Streptomyces globisporus. SgcJ and NCS-Orf16 share a common structure with the nuclear transport factor 2-like superfamily of proteins, featuring a putative substrate binding or catalytic active site. Site-directed mutagenesis of the conserved residues lining this site allowed us to propose that SgcJ and its homologues may play a catalytic role in transforming the linear polyene intermediate, along with other enediyne polyketide synthase-associated enzymes, into an enzyme-sequestered enediyne core intermediate. These findings will help formulate hypotheses and design experiments to ascertain the function of SgcJ and its homologues in nine-membered enediyne core biosynthesis.


    Organizational Affiliation

    Department of Chemistry, The Scripps Research Institute, Jupiter, FL, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
uncharacterized protein SgcJ
A, B, C, D, E, F, G, H, I, J
144Streptomyces carzinostaticus subsp. neocarzinostaticusMutation(s): 0 
Find proteins for Q84HC7 (Streptomyces carzinostaticus subsp. neocarzinostaticus)
Go to UniProtKB:  Q84HC7
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D, E, F, G, H, I, J
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.719 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.216 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 98.318α = 90.00
b = 52.827β = 90.14
c = 131.796γ = 90.00
Software Package:
Software NamePurpose
HKL-3000data reduction
SCALEPACKdata scaling
PHENIXrefinement
HKL-3000phasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2013-12-25
    Type: Initial release
  • Version 1.1: 2014-01-22
    Type: Structure summary
  • Version 1.2: 2014-04-23
    Type: Other, Structure summary
  • Version 1.3: 2014-08-06
    Type: Database references, Structure summary
  • Version 1.4: 2015-02-25
    Type: Derived calculations
  • Version 1.5: 2016-11-02
    Type: Database references, Other, Structure summary
  • Version 1.6: 2017-09-27
    Type: Derived calculations