3PS0

The structure of the CRISPR-associated protein, csa2, from Sulfolobus solfataricus

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	CRISPR-Associated protein, CSA2	polymer	328	36268.6	4	UniProt (Q97Y91) Pfam (PF01905) In PDB	Sulfolobus solfataricus
2		water	water		18.0	545	Chemie (HOH)

Sequence modifications

A, B, C, D: 1 - 321 (UniProt: Q97Y91)

PDB	External Database	Details
Met -6	-	expression tag
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	145074.3
All*	Total formula weight	145074.3

*Water molecules are not included.