AF_AFB1XS23F1

COMPUTED STRUCTURE MODEL OF BIFUNCTIONAL PURINE BIOSYNTHESIS PROTEIN PURH

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: B1XS23
• Released in AlphaFold DB:  2021-12-09
  Last Modified in AlphaFold DB: 2025-08-01
• Organism(s): Polynucleobacter necessarius STIR1
• UniProtKB: B1XS23

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Model Confidence 

• pLDDT (global): 96.08
• 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: 56.48 kDa 
• Atom Count: 3,960 
• Modeled Residue Count: 526 
• Deposited Residue Count: 526 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Bifunctional purine biosynthesis protein PurH	A	526	Polynucleobacter necessarius STIR1	Mutation(s): 0  Gene Names: purH EC: 3.5.4.10 (UniProt), 2.1.2.3 (UniProt)
UniProt
Find proteins for B1XS23 (Polynucleobacter necessarius subsp. necessarius (strain STIR1)) Explore B1XS23  Go to UniProtKB:  B1XS23