2RF3

Crystal Structure of Tricyclo-DNA: An Unusual Compensatory Change of Two Adjacent Backbone Torsion Angles

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	5'-d(CGCG(TCY)ATTCGCG)-3'	polymer	12	3701.4	2
2	B	ZINC ION	non-polymer		65.4	1	Chemie (ZN)
3	B	SPERMINE	non-polymer		202.3	1	Chemie (SPM)
4		water	water		18.0	93	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	7402.9
Non-Polymers*	Number of molecules	2
	Total formula weight	267.7
All*	Total formula weight	7670.6

*Water molecules are not included.