1FBX

CRYSTAL STRUCTURE OF ZINC-CONTAINING E.COLI GTP CYCLOHYDROLASE I

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, E...	GTP CYCLOHYDROLASE I	polymer	221	24733.5	15	UniProt (P0A6T5) Pfam (PF01227) In PDB	Escherichia coli	GTP-CH-I
2	G, H, I, J, K...	ZINC ION	non-polymer		65.4	15	Chemie (ZN)
3	F, G, H, I, J...	CHLORIDE ION	non-polymer		35.5	15	Chemie (CL)
4		water	water		18.0	15	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	15
	Total formula weight	371001.8
Non-Polymers*	Number of molecules	30
	Total formula weight	1512.9
All*	Total formula weight	372514.7

*Water molecules are not included.