7KPO

High Resolution Crystal Structure of the DNA-binding Domain from the Sensor Histidine Kinase ChiS from Vibrio cholerae

• PDB DOI: https://doi.org/10.2210/pdb7KPO/pdb

• Classification: DNA BINDING PROTEIN
• Organism(s): Vibrio cholerae O1 biovar El Tor
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2020-11-12 Released: 2020-11-25 
• Deposition Author(s): Minasov, G., Shuvalova, L., Kiryukhina, O., Dubrovska, I., Wiersum, G., Satchell, K.J.F., Center for Structural Genomics of Infectious Diseases (CSGID)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.28 Å
• R-Value Free: 0.180 
• R-Value Work: 0.144 
• R-Value Observed: 0.146 

Literature

High Resolution Crystal Structure of the DNA-binding Domain from the Sensor Histidine Kinase ChiS from Vibrio cholerae.

Minasov, G., Shuvalova, L., Kiryukhina, O., Dubrovska, I., Wiersum, G., Satchell, K.J.F., Center for Structural Genomics of Infectious Diseases (CSGID)

To be published.

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)

Biological Assembly 2  

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

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

Macromolecule Content

• Total Structure Weight: 13.43 kDa 
• Atom Count: 1,255 
• Modelled Residue Count: 107 
• Deposited Residue Count: 108 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Response regulator	A	108	Vibrio cholerae O1 biovar El Tor	Mutation(s): 0  Gene Names: GTF71_10845, GTF73_11165, GTF74_11165, GTF75_11330 EC: 2.7.13.3
UniProt
Find proteins for Q9KUA1 (Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961)) Explore Q9KUA1  Go to UniProtKB:  Q9KUA1

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PEG	F [auth A]	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N
SO4	B [auth A], C [auth A], D [auth A], E [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
FMT	G [auth A], H [auth A]	FORMIC ACID C H2 O2 BDAGIHXWWSANSR-UHFFFAOYSA-N

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: 1.28 Å
• R-Value Free: 0.180 
• R-Value Work: 0.144 
• R-Value Observed: 0.146 
• Space Group: C 2 2 2₁
• Diffraction Data: https://doi.org/10.18430/m37kpo

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 51.912	α = 90
b = 78.606	β = 90
c = 72.372	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-3000	data reduction
HKL-3000	data scaling
HKL-3000	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2020-11-25 
Deposition Author(s): Minasov, G., Shuvalova, L., Kiryukhina, O., Dubrovska, I., Wiersum, G., Satchell, K.J.F., Center for Structural Genomics of Infectious Diseases (CSGID)

Revision History  

• Version 1.0: 2020-11-25
  Type: Initial release
  
• Version 1.1: 2024-10-23
  Changes: Data collection, Database references, Structure summary