7CZO

N-terminal domain of HipA toxin

• PDB DOI: https://doi.org/10.2210/pdb7CZO/pdb

• Classification: UNKNOWN FUNCTION
• Organism(s): Haemophilus influenzae Rd KW20
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2020-09-09 Released: 2021-09-29 
• Deposition Author(s): Kang, S.M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.274 
• R-Value Work: 0.242 

Literature

The Haemophilus influenzae HipBA toxin-antitoxin system adopts an unusual three-com-ponent regulatory mechanism

Koo, J.S., Kang, S.M., Jung, W.M., Kim, D.H., Lee, B.J.

(2022) IUCrJ 9: 625-631

• DOI: https://doi.org/10.1107/S205225252200687X

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 12.65 kDa 
• Atom Count: 917 
• Modelled Residue Count: 106 
• Deposited Residue Count: 106 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Uncharacterized protein HI_0666	A	106	Haemophilus influenzae Rd KW20	Mutation(s): 0  Gene Names: HI_0666
UniProt
Find proteins for P44034 (Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd)) Explore P44034  Go to UniProtKB:  P44034

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CL (Subject of Investigation/LOI)	B [auth A], C [auth A], D [auth A], E [auth A], F [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.274 
• R-Value Work: 0.242 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 66.252	α = 90
b = 66.252	β = 90
c = 103.622	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHENIX	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2021-09-29 
Deposition Author(s): Kang, S.M.

Revision History  

• Version 1.0: 2021-09-29
  Type: Initial release
  
• Version 1.1: 2022-09-14
  Changes: Database references
• Version 1.2: 2023-11-29
  Changes: Data collection, Refinement description