6O7D

Crystal structure of Csm1-Csm4 cassette in complex with one ATP

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	CRISPR system single-strand-specific deoxyribonuclease Cas10/Csm1 (subtype III-A)	polymer	791	89750.6	1	UniProt (B6YWB8) Pfam (PF01966) Pfam (PF18211) Pfam (PF22335) In PDB	Thermococcus onnurineus (strain NA1)	ssDNase Cas10,Cyclic oligoadenylate synthase,ToCsm1
2	B	Csm4	polymer	289	32345.1	1	UniProt (B6YWC1) In PDB	Thermococcus onnurineus (strain NA1)
3	A	ADENOSINE-5'-TRIPHOSPHATE	non-polymer		507.2	1	Chemie (ATP)
4	A	MANGANESE (II) ION	non-polymer		54.9	2	Chemie (MN)

Sequence modifications

A: 1 - 777 (UniProt: B6YWB8)

PDB	External Database	Details
Met -13	-	initiating methionine
Gly -12	-	expression tag
Ser -11	-	expression tag
Ser -10	-	expression tag
His -9	-	expression tag
His -8	-	expression tag
His -7	-	expression tag
His -6	-	expression tag
His -5	-	expression tag
His -4	-	expression tag
Ser -3	-	expression tag
Gln -2	-	expression tag
Asp -1	-	expression tag
Pro 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	122095.7
Non-Polymers*	Number of molecules	3
	Total formula weight	617.1
All*	Total formula weight	122712.7

*Water molecules are not included.