6NJY

Type IV CRISPR associated RNA endonuclease Cas6 - apo form

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)	Type IV CRISPR associated Cas6 RNA endonuclease	polymer	248	28278.8	2	UniProt (F3ZXK6) Pfam (PF10040)	Mahella australiensis (strain DSM 15567 / CIP 107919 / 50-1 BON)
2	C, D, E, F, G... (A, B)	SULFATE ION	non-polymer		96.1	19	Chemie (SO4)
3	L, M, X, Y (A, B)	beta-D-glucopyranose	non-polymer		180.2	4	Chemie (BGC)
4	AA, Z (B, A)	water	water		18.0	155	Chemie (HOH)

Sequence modifications

A, B: 1 - 229 (UniProt: F3ZXK6)

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

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	56557.5
Non-Polymers*	Number of molecules	23
	Total formula weight	2545.8
All*	Total formula weight	59103.4

*Water molecules are not included.