7ECM

RNA duplex containing C-A base pair

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	RNA (5'-R(*GP*GP*GP*CP*CP*CP*GP*GP*AP*CP*CP*C)-3')	polymer	12	3841.4	4		synthetic construct
2	A, B, C, D	BARIUM ION	non-polymer		137.3	9	Chemie (BA)
3		water	water		18.0	235	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	15365.5
Non-Polymers*	Number of molecules	9
	Total formula weight	1235.9
All*	Total formula weight	16601.4

*Water molecules are not included.