AF_AFP9WGI5F1

COMPUTED STRUCTURE MODEL OF RNA POLYMERASE SIGMA FACTOR SIGB

There are no experimental data to verify the accuracy of this computed structure model. See Model Confidence metrics below for all regions of the polypeptide chain

• AlphaFold DB: P9WGI5
• Released in AlphaFold DB:  2021-07-01
  Last Modified in AlphaFold DB: 2025-08-01
• Organism(s): Mycobacterium tuberculosis H37Rv
• UniProtKB: P9WGI5

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Model Confidence 

• pLDDT (global): 89.95
• pLDDT (local):

Model Confidence 

•   Very high (pLDDT > 90)    
•   Confident (70 < pLDDT ≤ 90)    
•   Low (50 < pLDDT ≤ 70)    
•   Very low (pLDDT ≤ 50)    

Computed Structure Models provide per-residue confidence score (pLDDT) between 0 and 100. Some regions below 50 pLDDT may be unstructured in isolation.

Assembly  

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

Macromolecule Content 

• Total Structure Weight: 36.4 kDa 
• Atom Count: 2,554 
• Modeled Residue Count: 323 
• Deposited Residue Count: 323 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
RNA polymerase sigma factor SigB	A	323	Mycobacterium tuberculosis H37Rv	Mutation(s): 0  Gene Names: sigB
UniProt
Find proteins for P9WGI5 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore P9WGI5  Go to UniProtKB:  P9WGI5