7Z6R

Psychrobacter arcticus ATPPRT (HisGZ) R56A mutant bound to ATP and PRPP

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)	ATP phosphoribosyltransferase regulatory subunit	polymer	388	43129.0	2	UniProt (Q4FTX3) Pfam (PF13393)	Psychrobacter arcticus
2	C, D (C, D)	ATP phosphoribosyltransferase	polymer	232	25154.8	2	UniProt (Q4FQF7) Pfam (PF01634)	Psychrobacter arcticus	ATP-PRT,ATP-PRTase
3	E, H (C, D)	ADENOSINE-5'-TRIPHOSPHATE	non-polymer		507.2	2	Chemie (ATP)
4	F, G (C, D)	1-O-pyrophosphono-5-O-phosphono-alpha-D-ribofuranose	non-polymer		390.1	2	Chemie (PRP)
5	I, J, K, L (A, B, C, D)	water	water		18.0	16	Chemie (HOH)

Sequence modifications

A, B: 1 - 387 (UniProt: Q4FTX3)

PDB	External Database	Details
Gly 0	-	expression tag

C, D: 1 - 231 (UniProt: Q4FQF7)

PDB	External Database	Details
Gly 0	-	expression tag
Ala 56	Arg 56	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	136567.8
Non-Polymers*	Number of molecules	4
	Total formula weight	1794.5
All*	Total formula weight	138362.3

*Water molecules are not included.