2FZA

Crystal structure of d(GCGGGAGC): the base-intercalated 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 (A, B)	5'-D(*GP*(CBR)P*GP*GP*GP*AP*GP*C)-3'	polymer	8	2571.5	2
2	C, G (A, B)	CALCIUM ION	non-polymer		40.1	2	Chemie (CA)
3	D, E, F, H, I (A, B)	SODIUM ION	non-polymer		23.0	5	Chemie (NA)
4	J, K (A, B)	water	water		18.0	2	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	5143.1
Non-Polymers*	Number of molecules	7
	Total formula weight	195.1
All*	Total formula weight	5338.2

*Water molecules are not included.