1W4P

Binding of Nonnatural 3'-Nucleotides to Ribonuclease A

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	PANCREATIC RIBONUCLEASE A	polymer	124	13708.3	2	UniProt (P61823) Pfam (PF00074)	BOS TAURUS (BOVINE)	RNASE 1, RNASE A
2	C, D (A, B)	2'-DEOXYURIDINE 3'-MONOPHOSPHATE	non-polymer		308.2	2	Chemie (UM3)
3	E, F (A, B)	water	water		18.0	290	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	27416.7
Non-Polymers*	Number of molecules	2
	Total formula weight	616.4
All*	Total formula weight	28033.0

*Water molecules are not included.