4P83

Structure of engineered PyrR protein (PURPLE PyrR)

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	Engineered PyrR protein (Purple)	polymer	182	20281.2	4		synthetic construct
2	A, B, C, D	URIDINE-5'-MONOPHOSPHATE	non-polymer		324.2	4	Chemie (U5P)
3		water	water		18.0	134	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	81124.7
Non-Polymers*	Number of molecules	4
	Total formula weight	1296.7
All*	Total formula weight	82421.4

*Water molecules are not included.