1RPH

STRUCTURES OF RNASE A COMPLEXED WITH 3'-CMP AND D(CPA): ACTIVE SITE CONFORMATION AND CONSERVED WATER MOLECULES

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	RIBONUCLEASE A	polymer	124	13708.3	1	UniProt (P61823) Pfam (PF00074) In PDB	Bos taurus (cattle)
2	A	SULFATE ION	non-polymer		96.1	1	Chemie (SO4)
3		water	water		18.0	99	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	13708.3
Non-Polymers*	Number of molecules	1
	Total formula weight	96.1
All*	Total formula weight	13804.4

*Water molecules are not included.