4MS9

Native RNA-10mer Structure: ccggcgccgg

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	Native RNA duplex 10mer	polymer	10	3207.0	1
2	B, C, D (A)	STRONTIUM ION	non-polymer		87.6	3	Chemie (SR)
3	E (A)	water	water		18.0	57	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	3207.0
Non-Polymers*	Number of molecules	3
	Total formula weight	262.9
All*	Total formula weight	3469.8

*Water molecules are not included.