7WJ4

Structural basis for ligand binding modes of CTP synthase

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 (D, A, B, C)	CTP synthase	polymer	556	62443.7	4	UniProt (Q9VUL1) Pfam (PF06418) Pfam (PF00117)	Drosophila melanogaster (fruit fly)	CTP synthetase,UTP--ammonia ligase
2	BA, E, N, S (C, D, A, B)	GUANOSINE-5'-TRIPHOSPHATE	non-polymer		523.2	4	Chemie (GTP)
3	CA, F, O, T (C, D, A, B)	ADENOSINE-5'-TRIPHOSPHATE	non-polymer		507.2	4	Chemie (ATP)
4	DA, G, P, U (C, D, A, B)	GAMMA-L-GLUTAMIC ACID	non-polymer		147.1	4	Chemie (GGL)
5	AA, EA, FA, H, I... (C, D, A, B)	MAGNESIUM ION	non-polymer		24.3	12	Chemie (MG)
6	J, L, X, Z (D, A, B, C)	URIDINE 5'-TRIPHOSPHATE	non-polymer		484.1	4	Chemie (UTP)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	249774.6
Non-Polymers*	Number of molecules	28
	Total formula weight	6938.2
All*	Total formula weight	256712.8

*Water molecules are not included.