3BNA

REVERSIBLE BENDING AND HELIX GEOMETRY IN A B-DNA DODECAMER: CGCGAATTBRCGCG

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)	DNA (5'-D(*CP*GP*CP*GP*AP*AP*TP*TP*(CBR)P*GP*CP*G)-3')	polymer	12	3742.3	2
2	C, D (A, B)	water	water		18.0	44	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	7484.6
All*	Total formula weight	7484.6

*Water molecules are not included.