1MAS

PURINE NUCLEOSIDE HYDROLASE

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	INOSINE-URIDINE NUCLEOSIDE N-RIBOHYDROLASE	polymer	314	34206.5	2	UniProt (Q27546) Pfam (PF01156) In PDB	Crithidia fasciculata	PURINE NUCLEOSIDE HYDROLASE, INOSINE-URIDINE NUCLEOSIDASE, IU-NH
2	A, B	POTASSIUM ION	non-polymer		39.1	2	Chemie (K)
3		water	water		18.0	73	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	68413.0
Non-Polymers*	Number of molecules	2
	Total formula weight	78.2
All*	Total formula weight	68491.2

*Water molecules are not included.