3KRE

Crystal structure of phosphoribosylaminoimidazole-succinocarboxamide synthase from Ehrlichia chaffeensis at 1.8A resolution

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	Phosphoribosylaminoimidazole-succinocarboxamide synthase	polymer	263	30365.1	1	UniProt (Q2GHH2) Pfam (PF01259)	Ehrlichia chaffeensis str. Arkansas	SAICAR synthetase
2	B, C (A)	CHLORIDE ION	non-polymer		35.5	2	Chemie (CL)
3	D, E, F, G, H... (A)	1,2-ETHANEDIOL	non-polymer		62.1	10	Chemie (EDO)
4	N (A)	water	water		18.0	200	Chemie (HOH)

Sequence modifications

A: 1 - 242 (UniProt: Q2GHH2)

PDB	External Database	Details
Met -20	-	expression tag
Ala -19	-	expression tag
His -18	-	expression tag
His -17	-	expression tag
His -16	-	expression tag
His -15	-	expression tag
His -14	-	expression tag
His -13	-	expression tag
Met -12	-	expression tag
Gly -11	-	expression tag
Thr -10	-	expression tag
Leu -9	-	expression tag
Glu -8	-	expression tag
Ala -7	-	expression tag
Gln -6	-	expression tag
Thr -5	-	expression tag
Gln -4	-	expression tag
Gly -3	-	expression tag
Pro -2	-	expression tag
Gly -1	-	expression tag
Ser 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	30365.1
Non-Polymers*	Number of molecules	12
	Total formula weight	691.6
All*	Total formula weight	31056.7

*Water molecules are not included.