1ECJ

ESCHERICHIA COLI GLUTAMINE PHOSPHORIBOSYLPYROPHOSPHATE (PRPP) AMIDOTRANSFERASE COMPLEXED WITH 2 AMP PER TETRAMER

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	GLUTAMINE PHOSPHORIBOSYLPYROPHOSPHATE AMIDOTRANSFERASE	polymer	504	56422.7	4	UniProt (P00496) Pfam (PF13522) Pfam (PF00156) UniProt (by SIFTS) (P0AG16) In PDB	Escherichia coli
2	A, C	ADENOSINE MONOPHOSPHATE	non-polymer		347.2	2	Chemie (AMP)
3		water	water		18.0	178	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	225690.7
Non-Polymers*	Number of molecules	2
	Total formula weight	694.4
All*	Total formula weight	226385.2

*Water molecules are not included.