6QXN

Crystal structure of the CCA-adding enzyme of a psychrophilic organism in complex with CTP

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	CCA-adding enzyme	polymer	420	48498.3	1	UniProt (A0A1C7DQ98) Pfam (PF01743) Pfam (PF12627) Pfam (PF13735) In PDB	Planococcus halocryophilus
2	A	CYTIDINE-5'-TRIPHOSPHATE	non-polymer		483.2	1	Chemie (CTP)
3	A	GLYCEROL	non-polymer		92.1	2	Chemie (GOL)
4	A	ACETATE ION	non-polymer		59.0	3	Chemie (ACT)
5	A	PHOSPHATE ION	non-polymer		95.0	1	Chemie (PO4)
6		water	water		18.0	268	Chemie (HOH)

Sequence modifications

A: 1 - 377 (UniProt: A0A1C7DQ98)

PDB	External Database	Details
Met -42	-	initiating methionine
His -41	-	expression tag
His -40	-	expression tag
His -39	-	expression tag
His -38	-	expression tag
His -37	-	expression tag
His -36	-	expression tag
Ser -35	-	expression tag
Ser -34	-	expression tag
Gly -33	-	expression tag
Leu -32	-	expression tag
Val -31	-	expression tag
Pro -30	-	expression tag
Arg -29	-	expression tag
Gly -28	-	expression tag
Ser -27	-	expression tag
Gly -26	-	expression tag
Met -25	-	expression tag
Lys -24	-	expression tag
Glu -23	-	expression tag
Thr -22	-	expression tag
Ala -21	-	expression tag
Ala -20	-	expression tag
Ala -19	-	expression tag
Lys -18	-	expression tag
Phe -17	-	expression tag
Glu -16	-	expression tag
Arg -15	-	expression tag
Gln -14	-	expression tag
His -13	-	expression tag
Met -12	-	expression tag
Asp -11	-	expression tag
Ser -10	-	expression tag
Pro -9	-	expression tag
Asp -8	-	expression tag
Leu -7	-	expression tag
Gly -6	-	expression tag
Thr -5	-	expression tag
Asp -4	-	expression tag
Asp -3	-	expression tag
Asp -2	-	expression tag
Asp -1	-	expression tag
Lys 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	48498.3
Non-Polymers*	Number of molecules	7
	Total formula weight	939.4
All*	Total formula weight	49437.7

*Water molecules are not included.