2QAS

Crystal structure of Caulobacter crescentus SspB ortholog

• PDB DOI: https://doi.org/10.2210/pdb2QAS/pdb

• Classification: Hydrolase activator
• Organism(s): Caulobacter vibrioides
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2007-06-15 Released: 2007-09-04 
• Deposition Author(s): Chien, P., Grant, R.A., Sauer, R.T., Baker, T.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.55 Å
• R-Value Free: 0.262 
• R-Value Work: 0.213 
• R-Value Observed: 0.218 

Literature

Crystal structure of Caulobacter crescentus SspB ortholog

Chien, P., Grant, R.A., Sauer, R.T., Baker, T.A.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 4-mer - A2B2 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 4-mer - A2B1C1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 19.25 kDa 
• Atom Count: 1,026 
• Modelled Residue Count: 130 
• Deposited Residue Count: 177 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hypothetical protein	A	157	Caulobacter vibrioides	Mutation(s): 0  Gene Names: CC_2102
UniProt
Find proteins for Q9A6J2 (Caulobacter vibrioides (strain ATCC 19089 / CIP 103742 / CB 15)) Explore Q9A6J2  Go to UniProtKB:  Q9A6J2

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
C. crescentus ssrA peptide	B	20	N/A	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.55 Å
• R-Value Free: 0.262 
• R-Value Work: 0.213 
• R-Value Observed: 0.218 
• Space Group: P 6₄

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 121.76	α = 90
b = 121.76	β = 90
c = 27.66	γ = 120

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
CNS	refinement
PDB_EXTRACT	data extraction
ADSC	data collection
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-09-04 
Deposition Author(s): Chien, P., Grant, R.A., Sauer, R.T., Baker, T.A.

Revision History  

• Version 1.0: 2007-09-04
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2017-10-18
  Changes: Refinement description
• Version 1.3: 2024-02-21
  Changes: Data collection, Database references