8IH8

anti-sigmaF factor and Anti-sigmaF factor antagonist complex(usfx-RsfB)

• PDB DOI: https://doi.org/10.2210/pdb8IH8/pdb

• Classification: TRANSCRIPTION
• Organism(s): Mycobacterium tuberculosis H37Rv
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2023-02-22 Released: 2024-02-28 
• Deposition Author(s): Chen, Y.J., Su, D.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.215 
• R-Value Work: 0.180 
• R-Value Observed: 0.182 

Literature

High resolutions crystal structure of anti-sigmaF factor and Anti-sigmaF factor antagonist complex(usfx-RsfB)

Chen, Y.J., Su, D.

To be published.

Biological Assembly 1  

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

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

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 56.85 kDa 
• Atom Count: 3,952 
• Modelled Residue Count: 492 
• Deposited Residue Count: 538 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Anti-sigma-F factor antagonist RsfB	A, C [auth B]	124	Mycobacterium tuberculosis H37Rv	Mutation(s): 0  Gene Names: rsfB, Rv3687c
UniProt
Find proteins for P9WGE1 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore P9WGE1  Go to UniProtKB:  P9WGE1

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Anti-sigma-F factor RsbW	B [auth C], D	145	Mycobacterium tuberculosis H37Rv	Mutation(s): 0  Gene Names: rsbW, usfX, Rv3287c
UniProt
Find proteins for P9WGX7 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore P9WGX7  Go to UniProtKB:  P9WGX7

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	E [auth B]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.215 
• R-Value Work: 0.180 
• R-Value Observed: 0.182 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 50.425	α = 90
b = 77.928	β = 90
c = 133.53	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-3000	data reduction
HKL-3000	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-02-28 
Deposition Author(s): Chen, Y.J., Su, D.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	31370735

Revision History  

• Version 1.0: 2024-02-28
  Type: Initial release