4IT5

Chaperone HscB from Vibrio cholerae

• PDB DOI: https://doi.org/10.2210/pdb4IT5/pdb
• Entry: 4IT5 supersedes: 3HHO

• Classification: CHAPERONE
• Organism(s): Vibrio cholerae
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2013-01-17 Released: 2013-01-30 
• Deposition Author(s): Osipiuk, J., Gu, M., Papazisi, L., Anderson, W.F., Joachimiak, A., Center for Structural Genomics of Infectious Diseases (CSGID)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.15 Å
• R-Value Free: 0.259 
• R-Value Work: 0.220 
• R-Value Observed: 0.222 

Literature

Chaperone HscB from Vibrio cholerae.

Osipiuk, J., Gu, M., Papazisi, L., Anderson, W.F., Joachimiak, A.

To be published.

Biological Assembly 1  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content

• Total Structure Weight: 81.19 kDa 
• Atom Count: 5,469 
• Modelled Residue Count: 665 
• Deposited Residue Count: 696 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Co-chaperone protein HscB homolog	A, B, C, D	174	Vibrio cholerae	Mutation(s): 0  Gene Names: hscB, VC_0751
UniProt
Find proteins for Q9KTX9 (Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961)) Explore Q9KTX9  Go to UniProtKB:  Q9KTX9

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	E [auth A], F [auth B], G [auth C], H [auth D], I [auth D]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.15 Å
• R-Value Free: 0.259 
• R-Value Work: 0.220 
• R-Value Observed: 0.222 
• Space Group: P 1 2₁ 1
• Diffraction Data: https://doi.org/10.18430/m34it5

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 55.43	α = 90
b = 100.714	β = 90.47
c = 70.346	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
SBC-Collect	data collection
HKL-3000	data reduction
HKL-3000	data scaling
SHELXD	phasing
MLPHARE	phasing
DM	phasing
SOLVE	phasing
RESOLVE	phasing
HKL-3000	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-01-30 
Deposition Author(s): Osipiuk, J., Gu, M., Papazisi, L., Anderson, W.F., Joachimiak, A., Center for Structural Genomics of Infectious Diseases (CSGID)
• This entry supersedes: 3HHO

Revision History  

• Version 1.0: 2013-01-30
  Type: Initial release
  
• Version 1.1: 2017-11-15
  Changes: Refinement description
• Version 1.2: 2024-10-30
  Changes: Data collection, Database references, Derived calculations, Structure summary