1S9B

Crystal Structure Analysis of the B-DNA GAATTCG

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(*GP*AP*AP*TP*TP*CP*G)-3'	polymer	7	2137.4	2
2	A, B	NICKEL (II) ION	non-polymer		58.7	4	Chemie (NI)
3		water	water		18.0	20	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	4274.9
Non-Polymers*	Number of molecules	4
	Total formula weight	234.8
All*	Total formula weight	4509.6

*Water molecules are not included.