1XXA

C-TERMINAL DOMAIN OF ESCHERICHIA COLI ARGININE REPRESSOR/ L-ARGININE COMPLEX; PB DERIVATIVE

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...	ARGININE REPRESSOR	polymer	78	8351.5	6	UniProt (P0A6D0) Pfam (PF02863) In PDB	Escherichia coli K12	ARGR
2	A, C, D, E, F	ARGININE	non-polymer		175.2	6	Chemie (ARG)
3	C, D, F	LEAD (II) ION	non-polymer		207.2	4	Chemie (PB)		ARG
4		water	water		18.0	415	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	50108.8
Non-Polymers*	Number of molecules	10
	Total formula weight	1880.1
All*	Total formula weight	51988.9

*Water molecules are not included.