1I2X

2.4 A STRUCTURE OF A-DUPLEX WITH BULGED ADENOSINE, SPERMIDINE FORM

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, D, C	DNA/RNA (5'-R(*GP*CP*G)-D(P*AP*TP*AP*T)-R(P*AP*CP*GP*U)-3')	polymer	11	3471.2	4
2	D	SPERMIDINE	non-polymer		145.2	1	Chemie (SPD)
3		water	water		18.0	79	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	13884.8
Non-Polymers*	Number of molecules	1
	Total formula weight	145.2
All*	Total formula weight	14030.0

*Water molecules are not included.