8I9O

ecCTPS filament bound with CTP, NADH, DON

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D	CTP synthase	polymer	544	60317.8	4	UniProt (C3SX67) Pfam (PF06418) Pfam (PF00117) Pfam (PF07722) UniProt (by SIFTS) (P0A7E5) In PDB	Escherichia coli 'BL21-Gold(DE3)pLysS AG'
2	A, B, C, D	ADENINE	non-polymer		135.1	4	Chemie (ADE)
3	A, B, C, D	5-OXO-L-NORLEUCINE	non-polymer		145.2	4	Chemie (ONL)
4	A, B, C, D	CYTIDINE-5'-TRIPHOSPHATE	non-polymer		483.2	4	Chemie (CTP)
5	A, B, C, D	MAGNESIUM ION	non-polymer		24.3	4	Chemie (MG)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	241271.2
Non-Polymers*	Number of molecules	16
	Total formula weight	3151.0
All*	Total formula weight	244422.2

*Water molecules are not included.