3O9O | pdb_00003o9o

Crystal Structure of GBS1074, an Esat-6 homologue from Group B Streptococcus

• PDB DOI: https://doi.org/10.2210/pdb3O9O/pdb

• Classification: UNKNOWN FUNCTION
• Organism(s): Streptococcus agalactiae NEM316
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2010-08-04 Released: 2010-11-10 
• Deposition Author(s): White, S.A., Shukla, A., Anthony, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 
  0.219 (Depositor), 0.252 (DCC) 
• R-Value Work: 
  0.189 (Depositor), 0.228 (DCC) 
• R-Value Observed: 
  0.191 (Depositor) 

Literature

The homodimeric GBS1074 from Streptococcus agalactiae.

Shukla, A., Pallen, M., Anthony, M., White, S.A.

(2010) Acta Crystallogr Sect F Struct Biol Cryst Commun 66: 1421-1425

• PubMed: 21045286 
• DOI: https://doi.org/10.1107/S1744309110036286
• Primary Citation Related Structures: 
  3O9O


• PubMed Abstract: 
  

  ESAT-6 is a well characterized secreted protein from Mycobacterium tuberculosis and represents the archetype of the WXG100 family of proteins. Genes encoding ESAT-6 homologues have been identified in the genome of the human pathogen Streptococcus agalactiae; one of these genes, esxA, has been cloned and the recombinant protein has been crystallized. In contrast to M. tuberculosis ESAT-6, the crystal structure of GBS1074 reveals a homodimeric structure similar to homologous structures from Staphylococcus aureus and Helicobacter pylori. Intriguingly, GBS1074 forms elongated fibre-like assemblies in the crystal structure.

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Organizational Affiliation: 
• School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, England.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 24.2 kDa 
• Atom Count: 1,616 
• Modeled Residue Count: 188 
• Deposited Residue Count: 216 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Uncharacterized protein gbs1074	A, B	108	Streptococcus agalactiae NEM316	Mutation(s): 0  Gene Names: gbs1074
UniProt
Find proteins for Q8E5F8 (Streptococcus agalactiae serotype III (strain NEM316)) Explore Q8E5F8  Go to UniProtKB:  Q8E5F8

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free:  0.219 (Depositor), 0.252 (DCC) 
• R-Value Work:  0.189 (Depositor), 0.228 (DCC) 
• R-Value Observed: 0.191 (Depositor) 

Space Group: P 6₅ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 76.22	α = 90
b = 76.22	β = 90
c = 151.34	γ = 120

Software Package:

Software Name	Purpose
MxCuBE	data collection
SOLVE	phasing
PHENIX	refinement
XDS	data reduction
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-11-10 
Deposition Author(s): White, S.A., Shukla, A., Anthony, M.

Revision History  

• Version 1.0: 2010-11-10
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Source and taxonomy, Version format compliance
• Version 1.2: 2011-11-16
  Changes: Atomic model
• Version 1.3: 2018-10-10
  Changes: Data collection, Database references, Structure summary
• Version 1.4: 2024-02-21
  Changes: Data collection, Database references, Structure summary