3NP6

The crystal structure of Berberine 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)	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)	BERBERINE	non-polymer		336.4	1	Chemie (BER)
4	G (D)	water	water		18.0	1	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	376.4
All*	Total formula weight	7613.3

*Water molecules are not included.