AF_AFQ9NR30F1

COMPUTED STRUCTURE MODEL OF NUCLEOLAR RNA HELICASE 2

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: Q9NR30
• Released in AlphaFold DB:  2021-07-01
  Last Modified in AlphaFold DB: 2025-08-01
• Organism(s): Homo sapiens
• UniProtKB: Q9NR30

---

Model Confidence 

• pLDDT (global): 71.05
• 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: 87.49 kDa 
• Atom Count: 6,140 
• Modeled Residue Count: 783 
• Deposited Residue Count: 783 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Nucleolar RNA helicase 2	A	783	Homo sapiens	Mutation(s): 0  Gene Names: DDX21 EC: 3.6.4.13
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NR30 (Homo sapiens) Explore Q9NR30  Go to UniProtKB:  Q9NR30
PHAROS:  Q9NR30 GTEx:  ENSG00000165732