2GQS

SAICAR Synthetase Complexed with CAIR-Mg2+ and ADP

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)	Phosphoribosylaminoimidazole-succinocarboxamide synthase	polymer	237	27030.0	2	UniProt (P0A7D7) Pfam (PF01259)	Escherichia coli	SAICAR synthetase
2	C, D, E, I, J... (A, B)	MAGNESIUM ION	non-polymer		24.3	6	Chemie (MG)
3	F, L (A, B)	ADENOSINE-5'-DIPHOSPHATE	non-polymer		427.2	2	Chemie (ADP)
4	G, M (A, B)	5-AMINO-1-(5-O-PHOSPHONO-BETA-D-RIBOFURANOSYL)-1H-IMIDAZOLE-4-CARBOXYLIC ACID	non-polymer		339.2	2	Chemie (C2R)
5	H, N (A, B)	FORMIC ACID	non-polymer		46.0	2	Chemie (FMT)
6	O, P (A, B)	water	water		18.0	197	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	54060.0
Non-Polymers*	Number of molecules	12
	Total formula weight	1770.7
All*	Total formula weight	55830.7

*Water molecules are not included.