Number of Protein Chains:2
- Classes: Alpha and beta proteins (a/b)
 - Folds: Nucleoside phosphorylase/phosphoribosyltransferase catalytic domain
 - Superfamilies: Nucleoside phosphorylase/phosphoribosyltransferase catalytic domain
 
Families:
- 24
 - 2
 
* Number of PDB entries of each Family
	
	
