8VJT

Structure of the poly-UG quadruplex (GUGUGU)4

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*UP*GP*UP*GP*U)-3')	polymer	6	1909.2	2		synthetic construct
2	C, D, E, F, H... (A, B)	POTASSIUM ION	non-polymer		39.1	7	Chemie (K)
3	G, K (A, B)	SODIUM ION	non-polymer		23.0	2	Chemie (NA)
4	L, M (A, B)	water	water		18.0	39	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	3818.3
Non-Polymers*	Number of molecules	9
	Total formula weight	319.7
All*	Total formula weight	4138.0

*Water molecules are not included.