7MQW

Histidine triad protein

• PDB DOI: https://doi.org/10.2210/pdb7MQW/pdb

• Classification: UNKNOWN FUNCTION
• Organism(s): Mycolicibacterium smegmatis
• Expression System: Escherichia coli 'BL21-Gold(DE3)pLysS AG
• Mutation(s): No 


• Deposited: 2021-05-06 Released: 2021-05-26 
• Deposition Author(s): Ghosh, S., Goldgur, Y., Shuman, S.
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.55 Å
• R-Value Free: 0.206 
• R-Value Work: 0.180 
• R-Value Observed: 0.181 

Literature

Histidine triad protein

Ghosh, S., Goldgur, Y., Shuman, S.

(null) Unpublished 

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 Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 31.56 kDa 
• Atom Count: 2,494 
• Modelled Residue Count: 274 
• Deposited Residue Count: 284 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HIT family protein	A, B	142	Mycolicibacterium smegmatis	Mutation(s): 0  Gene Names: hit_2, ERS451418_05688
UniProt
Find proteins for A0R4K9 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155)) Explore A0R4K9  Go to UniProtKB:  A0R4K9

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	C [auth A], D [auth A], E [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.55 Å
• R-Value Free: 0.206 
• R-Value Work: 0.180 
• R-Value Observed: 0.181 
• Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 55.149	α = 90
b = 55.149	β = 90
c = 205.735	γ = 90

Software Package:

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2021-05-26 
Deposition Author(s): Ghosh, S., Goldgur, Y., Shuman, S.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	P30-CA008748

Revision History  

• Version 1.0: 2021-05-26
  Type: Initial release
  
• Version 1.1: 2023-10-18
  Changes: Data collection, Database references, Refinement description