3OIZ | pdb_00003oiz

Crystal structure of antisigma-factor antagonist, STAS domain from Rhodobacter sphaeroides

• PDB DOI: https://doi.org/10.2210/pdb3OIZ/pdb

• Classification: MEMBRANE PROTEIN
• Organism(s): Cereibacter sphaeroides 2.4.1
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 2010-08-20 Released: 2010-09-08 
• Deposition Author(s): Chang, C., Marshall, N., Freeman, L., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.65 Å
• R-Value Free: 
  0.216 (Depositor), 0.209 (DCC) 
• R-Value Work: 
  0.160 (Depositor), 0.168 (DCC) 
• R-Value Observed: 
  0.162 (Depositor) 

Literature

Crystal structure of antisigma-factor antagonist, STAS domain from Rhodobacter sphaeroides

Chang, C., Marshall, N., Freeman, L., Joachimiak, A.

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)

Macromolecule Content

• Total Structure Weight: 11.44 kDa 
• Atom Count: 900 
• Modelled Residue Count: 92 
• Deposited Residue Count: 99 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Antisigma-factor antagonist, STAS	A	99	Cereibacter sphaeroides 2.4.1	Mutation(s): 0  Gene Names: RHOS4_40800, RSP_4197 Membrane Entity: Yes
UniProt
Find proteins for Q3IUY6 (Cereibacter sphaeroides (strain ATCC 17023 / DSM 158 / JCM 6121 / CCUG 31486 / LMG 2827 / NBRC 12203 / NCIMB 8253 / ATH 2.4.1.)) Explore Q3IUY6  Go to UniProtKB:  Q3IUY6

Small Molecules

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.65 Å
• R-Value Free:  0.216 (Depositor), 0.209 (DCC) 
• R-Value Work:  0.160 (Depositor), 0.168 (DCC) 
• R-Value Observed: 0.162 (Depositor) 

Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 72.102	α = 90
b = 72.102	β = 90
c = 36.429	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
SBC-Collect	data collection
HKL-3000	data reduction
HKL-3000	data scaling
HKL-3000	phasing
SHELXD	phasing
SHELXE	model building
MLPHARE	phasing
DM	phasing
RESOLVE	phasing
Coot	model building
ARP/wARP	model building

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-09-08 
Deposition Author(s): Chang, C., Marshall, N., Freeman, L., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

Revision History  

• Version 1.0: 2010-09-08
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2024-11-06
  Changes: Data collection, Database references, Derived calculations, Structure summary