1J6S

Crystal Structure of an RNA Tetraplex (UGAGGU)4 with A-tetrads, G-tetrads, U-tetrads and G-U octads

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 (A, B, C, D)	5'-R(*(BRUP*GP*AP*GP*GP*U)-3'	polymer	6	1995.1	4
2	E, F, I, J, M... (A, B, C, D)	BARIUM ION	non-polymer		137.3	8	Chemie (BA)
3	G, H, K, L, O... (A, B, C, D)	SODIUM ION	non-polymer		23.0	8	Chemie (NA)
4	U, V, W, X (A, B, C, D)	water	water		18.0	113	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	7980.4
Non-Polymers*	Number of molecules	16
	Total formula weight	1282.5
All*	Total formula weight	9262.9

*Water molecules are not included.