2ELG

The rare crystallographic structure of d(CGCGCG)2: The natural spermidine molecule bound to the minor groove of left-handed Z-DNA d(CGCGCG)2 at 10 degree celsius

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'-D(*DCP*DGP*DCP*DGP*DCP*DG)-3')	polymer	6	1810.2	2
2	C (A)	SPERMIDINE	non-polymer		145.2	1	Chemie (SPD)
3	D, E, F (A)	MAGNESIUM ION	non-polymer		24.3	3	Chemie (MG)
4	G (A)	SODIUM ION	non-polymer		23.0	1	Chemie (NA)
5	H, I (A, B)	water	water		18.0	67	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	3620.4
Non-Polymers*	Number of molecules	5
	Total formula weight	241.2
All*	Total formula weight	3861.6

*Water molecules are not included.