3MWG | pdb_00003mwg

Crystal structure of Staphylococcus aureus SirA

• PDB DOI: https://doi.org/10.2210/pdb3MWG/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Staphylococcus aureus subsp. aureus N315
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2010-05-05 Released: 2010-09-01 
• Deposition Author(s): Grigg, J.C., Murphy, M.E.P.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 
  0.236 (Depositor), 0.234 (DCC) 
• R-Value Work: 
  0.192 (Depositor), 0.191 (DCC) 
• R-Value Observed: 
  0.194 (Depositor) 

Literature

Staphylococcus aureus SirA specificity for staphyloferrin B is driven by localized conformational change

Grigg, J.C., Cheung, J., Heinrichs, D.E., Murphy, M.E.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 62.74 kDa 
• Atom Count: 4,597 
• Modeled Residue Count: 550 
• Deposited Residue Count: 558 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Iron-regulated ABC transporter siderophore-binding protein SirA	A, B	279	Staphylococcus aureus subsp. aureus N315	Mutation(s): 0  Gene Names: SA0111, sirA

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free:  0.236 (Depositor), 0.234 (DCC) 
• R-Value Work:  0.192 (Depositor), 0.191 (DCC) 
• R-Value Observed: 0.194 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.136	α = 90
b = 61.513	β = 100.08
c = 114.649	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SOLVE	phasing
RESOLVE	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-09-01 
Deposition Author(s): Grigg, J.C., Murphy, M.E.P.

Revision History  

• Version 1.0: 2010-09-01
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Source and taxonomy, Version format compliance
• Version 1.2: 2017-11-08
  Changes: Refinement description
• Version 1.3: 2024-11-27
  Changes: Data collection, Database references, Derived calculations, Structure summary