1DCG

THE MOLECULAR STRUCTURE OF THE LEFT-HANDED Z-DNA DOUBLE HELIX AT 1.0 ANGSTROM ATOMIC RESOLUTION. GEOMETRY, CONFORMATION, AND IONIC INTERACTIONS OF D(CGCGCG)

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	DNA (5'-D(*CP*GP*CP*GP*CP*G)-3')	polymer	6	1810.2	2
2	A, B	MAGNESIUM ION	non-polymer		24.3	4	Chemie (MG)
3		water	water		18.0	84	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	3620.4
Non-Polymers*	Number of molecules	4
	Total formula weight	97.2
All*	Total formula weight	3717.6

*Water molecules are not included.