1K68

Crystal Structure of the Phosphorylated Cyanobacterial Phytochrome Response Regulator RcpA

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	Phytochrome Response Regulator RcpA	polymer	140	15862.0	2	UniProt (Q8RTN0)	Tolypothrix sp. PCC 7601
2	C, D (A, B)	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
3	E, F (A, B)	water	water		18.0	113	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	31724.0
Non-Polymers*	Number of molecules	2
	Total formula weight	48.6
All*	Total formula weight	31772.6

*Water molecules are not included.