1A5P

C[40,95]A VARIANT OF BOVINE PANCREATIC 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	RIBONUCLEASE A	polymer	124	13644.2	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	120	Chemie (HOH)

Sequence modifications

A: 1 - 124 (UniProt: P61823)

PDB	External Database	Details
Ala 40	Cys 66	engineered mutation
Ala 95	Cys 121	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	13644.2
Non-Polymers*	Number of molecules	1
	Total formula weight	96.1
All*	Total formula weight	13740.3

*Water molecules are not included.