4W8K

Crystal structure of a putative Cas1 enzyme from Vibrio phage ICP1

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)	Cas1 protein	polymer	323	36717.7	2	UniProt (F1D4K1)	Vibrio phage ICP1_2005_A
2	C (B)	POTASSIUM ION	non-polymer		39.1	1	Chemie (K)
3	D, E (A, B)	water	water		18.0	325	Chemie (HOH)

Sequence modifications

A, B: 1 - 302 (UniProt: F1D4K1)

PDB	External Database	Details
Met -20	-	initiating methionine
Gly -19	-	expression tag
Ser -18	-	expression tag
Ser -17	-	expression tag
His -16	-	expression tag
His -15	-	expression tag
His -14	-	expression tag
His -13	-	expression tag
His -12	-	expression tag
His -11	-	expression tag
Ser -10	-	expression tag
Ser -9	-	expression tag
Gly -8	-	expression tag
Arg -7	-	expression tag
Glu -6	-	expression tag
Asn -5	-	expression tag
Leu -4	-	expression tag
Tyr -3	-	expression tag
Phe -2	-	expression tag
Gln -1	-	expression tag
Gly 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	73435.4
Non-Polymers*	Number of molecules	1
	Total formula weight	39.1
All*	Total formula weight	73474.5

*Water molecules are not included.