5ANA

THE CRYSTAL STRUCTURE OF D(GTACGTAC) AT 2.25 ANGSTROMS RESOLUTION. ARE THE A-DNA'S ALWAYS UNWOUND APPROXIMATELY 10 DEGREES AT THE C-G STEPS

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	DNA (5'-D(*GP*TP*AP*CP*GP*TP*AP*C)-3')	polymer	8	2426.6	1
2	B (A)	MAGNESIUM ION	non-polymer		24.3	1	Chemie (MG)
3	C (A)	water	water		18.0	52	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	2426.6
Non-Polymers*	Number of molecules	1
	Total formula weight	24.3
All*	Total formula weight	2450.9

*Water molecules are not included.