4R49

Racemic crystal structure of a calcium-bound B-DNA duplex

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(*CP*CP*GP*GP*TP*AP*CP*CP*GP*G)-3'	polymer	10	3046.0	2		synthetic construct
2	A, B	CALCIUM ION	non-polymer		40.1	7	Chemie (CA)
3	A, B	SODIUM ION	non-polymer		23.0	2	Chemie (NA)
4		water	water		18.0	167	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	6092.0
Non-Polymers*	Number of molecules	9
	Total formula weight	326.5
All*	Total formula weight	6418.5

*Water molecules are not included.