4XSN

Copper(II) bound to the Z-DNA form 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*(BGM)P*CP*GP*CP*GP)-3')	polymer	6	1889.1	2		synthetic construct
2	B	COPPER (II) ION	non-polymer		63.5	1	Chemie (CU)
3		water	water		18.0	98	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	3778.2
Non-Polymers*	Number of molecules	1
	Total formula weight	63.5
All*	Total formula weight	3841.7

*Water molecules are not included.