4HW1

Multiple Crystal structures of an all-AT DNA dodecamer stabilized by weak interactions.

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D (A, B, C, D)	DNA (5'-D(*AP*AP*TP*AP*AP*AP*TP*TP*TP*AP*TP*T)-3')	polymer	12	3659.4	4
2	E (B)	MAGNESIUM ION	non-polymer		24.3	1	Chemie (MG)
3	F, G, H, I (A, B, C, D)	water	water		18.0	14	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	14637.8
Non-Polymers*	Number of molecules	1
	Total formula weight	24.3
All*	Total formula weight	14662.1

*Water molecules are not included.