4KGX

The R state structure of E. coli ATCase with CTP bound

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C	Aspartate carbamoyltransferase	polymer	310	34337.1	2	UniProt (E8Y328) In PDB	Escherichia coli	Aspartate transcarbamylase
2	B, D	Aspartate carbamoyltransferase regulatory chain	polymer	153	17143.6	2	UniProt (E8Y329) In PDB	Escherichia coli
3	A, C	N-(PHOSPHONACETYL)-L-ASPARTIC ACID	non-polymer		255.1	2	Chemie (PAL)
4	B, D	ZINC ION	non-polymer		65.4	2	Chemie (ZN)
5	B, D	CYTIDINE-5'-TRIPHOSPHATE	non-polymer		483.2	2	Chemie (CTP)
6		water	water		18.0	683	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	102961.5
Non-Polymers*	Number of molecules	6
	Total formula weight	1607.4
All*	Total formula weight	104568.8

*Water molecules are not included.