2R21

Structure of the RNA brominated tridecamer r(GCGUU-5BUGAAACGC) at 1.6 A (BrMn)

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)	RNA (5'-R(*GP*CP*GP*UP*UP*(5BU)P*GP*AP*AP*AP*CP*GP*C)-3')	polymer	13	4236.4	2
2	C, D, E, G (A, B)	SODIUM ION	non-polymer		23.0	4	Chemie (NA)
3	F (A)	MANGANESE (II) ION	non-polymer		54.9	1	Chemie (MN)
4	H, I (A, B)	water	water		18.0	162	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	8472.8
Non-Polymers*	Number of molecules	5
	Total formula weight	146.9
All*	Total formula weight	8619.7

*Water molecules are not included.