7DPW

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 (A, B, C, D)	CTP synthase	polymer	556	62443.7	4	UniProt (Q9VUL1) Pfam (PF06418) Pfam (PF00117)	Drosophila melanogaster (Fruit fly)	CTP synthetase,UTP--ammonia ligase
2	E, F, J, K, M... (A, B, C, D)	CYTIDINE-5'-TRIPHOSPHATE	non-polymer		483.2	8	Chemie (CTP)
3	G, H, I, L, O... (A, B, C, D)	MAGNESIUM ION	non-polymer		24.3	8	Chemie (MG)
4	U, V, W, X (A, B, C, D)	water	water		18.0	32	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	249774.6
Non-Polymers*	Number of molecules	16
	Total formula weight	4059.7
All*	Total formula weight	253834.3

*Water molecules are not included.