4D9X

The crystal structure of Coptisine bound to DNA d(CGTACG)

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(*CP*GP*TP*AP*CP*G)-3')	polymer	6	1809.2	4
2	E (B)	CALCIUM ION	non-polymer		40.1	1	Chemie (CA)
3	F (C)	6,7-dihydro[1,3]dioxolo[4,5-g][1,3]dioxolo[7,8]isoquino[3,2-a]isoquinolin-5-ium	non-polymer		320.3	1	Chemie (KPT)
4	G, H, I, J (A, B, C, D)	water	water		18.0	15	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	7236.9
Non-Polymers*	Number of molecules	2
	Total formula weight	360.4
All*	Total formula weight	7597.3

*Water molecules are not included.