1DA3

THE CRYSTAL STRUCTURE OF THE TRIGONAL DECAMER C-G-A-T-C-G-6MEA-T-C-G: A B-DNA HELIX WITH 10.6 BASE-PAIRS PER TURN

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*AP*TP*CP*GP*(6MA)P*TP*CP*G)-3')	polymer	10	3059.0	2
2	B	CHLORIDE ION	non-polymer		35.5	1	Chemie (CL)
3	B	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
4		water	water		18.0	53	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	6118.1
Non-Polymers*	Number of molecules	3
	Total formula weight	84.1
All*	Total formula weight	6202.1

*Water molecules are not included.