3QHQ

Structure of CRISPR-associated protein Csn2

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)	Sag0897 family CRISPR-associated protein	polymer	229	26726.9	2	UniProt (E7S4M0) Pfam (PF09711)	Streptococcus agalactiae	Csn2
2	C, D, F, G, H (A, B)	CALCIUM ION	non-polymer		40.1	5	Chemie (CA)
3	E, I, J (A, B)	1,2-ETHANEDIOL	non-polymer		62.1	3	Chemie (EDO)
4	K, L (A, B)	water	water		18.0	296	Chemie (HOH)

Sequence modifications

A, B: 1 - 221 (UniProt: E7S4M0)

PDB	External Database	Details
Val 2	Ile 2	SEE REMARK 999
Ala 133	Val 133	SEE REMARK 999
His 157	Asn 157	SEE REMARK 999
Leu 222	-	expression tag
Glu 223	-	expression tag
His 224	-	expression tag
His 225	-	expression tag
His 226	-	expression tag
His 227	-	expression tag
His 228	-	expression tag
His 229	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	53453.8
Non-Polymers*	Number of molecules	8
	Total formula weight	386.6
All*	Total formula weight	53840.3

*Water molecules are not included.