6S58

AvaII restriction endonuclease in the absence of nucleic acids

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D (A, B, C, D)	Type II site-specific deoxyribonuclease	polymer	238	27161.8	4	UniProt (Q8YYB7)	Nostoc sp. PCC 7120 = FACHB-418	AvaII restriction endonuclease
2	E, F, H, I, J (A, C, D)	CALCIUM ION	non-polymer		40.1	5	Chemie (CA)
3	G (A)	UNKNOWN ATOM OR ION	non-polymer		35.5	1	Chemie (UNX)
4	K, L, M, N (A, B, C, D)	water	water		18.0	97	Chemie (HOH)

Sequence modifications

A, B, C, D: 3 - 230 (UniProt: Q8YYB7)

PDB	External Database	Details
Met 1	-	initiating methionine
Gly 2	-	expression tag
Leu 231	-	expression tag
Glu 232	-	expression tag
His 233	-	expression tag
His 234	-	expression tag
His 235	-	expression tag
His 236	-	expression tag
His 237	-	expression tag
His 238	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	108647.2
Non-Polymers*	Number of molecules	6
	Total formula weight	235.8
All*	Total formula weight	108883.0

*Water molecules are not included.