1ZF7

GAC Duplex B-DNA

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*TP*CP*GP*AP*CP*GP*G)-3'	polymer	10	3046.0	2
2	A, B	CALCIUM ION	non-polymer		40.1	3	Chemie (CA)
3	A	SODIUM ION	non-polymer		23.0	1	Chemie (NA)
4		water	water		18.0	21	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	6092.0
Non-Polymers*	Number of molecules	4
	Total formula weight	143.2
All*	Total formula weight	6235.2

*Water molecules are not included.