284D

THE BI-LOOP, A NEW GENERAL FOUR-STRANDED DNA MOTIF

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	DNA (5'-CD(*P*AP*TP*TP*CP*AP*TP*TP*C)-3')	polymer	8	2376.6	2
2	C (A)	SODIUM ION	non-polymer		23.0	1	Chemie (NA)
3	D, E, F, G, H... (A, B)	BARIUM ION	non-polymer		137.3	11	Chemie (BA)
4	O, P (A, B)	water	water		18.0	105	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	4753.2
Non-Polymers*	Number of molecules	12
	Total formula weight	1533.6
All*	Total formula weight	6286.8

*Water molecules are not included.