3IBK

Crystal structure of a telomeric RNA quadruplex

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	RNA (5'-R(*(5BU)P*AP*GP*GP*GP*UP*UP*AP*GP*GP*GP*U)-3')	polymer	12	3988.2	2
2	A	POTASSIUM ION	non-polymer		39.1	2	Chemie (K)
3		water	water		18.0	45	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	7976.5
Non-Polymers*	Number of molecules	2
	Total formula weight	78.2
All*	Total formula weight	8054.7

*Water molecules are not included.