1GOV

RIBONUCLEASE BI(G SPECIFIC ENDONUCLEASE) COMPLEXED WITH SULFATE IONS

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)	RIBONUCLEASE	polymer	116	12974.5	2	UniProt (P00649) Pfam (PF00545)	BACILLUS INTERMEDIUS	BINASE
2	C, D, E, F (A, B)	SULFATE ION	non-polymer		96.1	4	Chemie (SO4)
3	G, H (A, B)	water	water		18.0	182	Chemie (HOH)

Sequence modifications

A, B: -7 - -1 (PDB: 1GOV)
A, B: 1 - 109 (UniProt: P00649)

PDB	External Database	Details
Asn 21	Asp 74	conflict
Asp 22	Asn 75	conflict
Asp 40	Asn 93	conflict
Gly 66	Ser 119	conflict
Ser 67	Gly 120	conflict

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	25949.0
Non-Polymers*	Number of molecules	4
	Total formula weight	384.3
All*	Total formula weight	26333.2

*Water molecules are not included.