AF_AFP18249F1

COMPUTED STRUCTURE MODEL OF RNA POLYMERASE PRINCIPAL SIGMA FACTOR HRDD

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: P18249
• Released in AlphaFold DB:  2021-12-09
  Last Modified in AlphaFold DB: 2025-08-01
• Organism(s): Streptomyces coelicolor A3(2)
• UniProtKB: P18249

---

Model Confidence 

• pLDDT (global): 89.03
• 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: 37.21 kDa 
• Atom Count: 2,615 
• Modeled Residue Count: 332 
• Deposited Residue Count: 332 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
RNA polymerase principal sigma factor HrdD	A	332	Streptomyces coelicolor A3(2)	Mutation(s): 0  Gene Names: hrdD
UniProt
Find proteins for P18249 (Streptomyces coelicolor (strain ATCC BAA-471 / A3(2) / M145)) Explore P18249  Go to UniProtKB:  P18249