1XA2

Cobalt hexammine induced tautomeric shift in Z-DNA: the structure of d(CGCGCA).d(TGCGCG) in two crystal forms

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	5'-D(*CP*GP*CP*GP*CP*A)-3'	polymer	6	1794.2	1
2	B (B)	5'-D(*TP*GP*CP*GP*CP*G)-3'	polymer	6	1825.2	1
3	C (A)	COBALT HEXAMMINE(III)	non-polymer		161.1	1	Chemie (NCO)
4	D, E (A, B)	water	water		18.0	45	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	3619.4
Non-Polymers*	Number of molecules	1
	Total formula weight	161.1
All*	Total formula weight	3780.5

*Water molecules are not included.