4RJ1

Structural variations and solvent structure of UGGGGU quadruplexes stabilized by Sr2+ ions

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(*UP*GP*GP*GP*GP*U)-3')	polymer	6	1948.2	2		synthetic construct
2	C, D, F, G, H (A, B)	STRONTIUM ION	non-polymer		87.6	5	Chemie (SR)
3	E, I (A, B)	SODIUM ION	non-polymer		23.0	2	Chemie (NA)
4	J, K, L (B)	CALCIUM ION	non-polymer		40.1	3	Chemie (CA)
5	M, N (A, B)	water	water		18.0	66	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	3896.4
Non-Polymers*	Number of molecules	10
	Total formula weight	604.3
All*	Total formula weight	4500.7

*Water molecules are not included.