1XVR

echinomycin (CGTACG)2 complex

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, C)	5'-D(*CP*GP*TP*AP*CP*G)-3'	polymer	6	1809.2	2
2	C, D (D, E)	ECHINOMYCIN	polymer	8	809.0	2	NOR (NOR01126) BIRD (PRD_000491)	STREPTOMYCES ECHINATUS	QUINOMYCIN A
3	E, F (A, C)	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
4	G, H, I, J (D, E)	2-CARBOXYQUINOXALINE	non-polymer		174.2	4	BIRD (PRD_000491) Chemie (QUI)
5	K, L, M, N (A, C, D, E)	water	water		18.0	43	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	5236.5
Non-Polymers*	Number of molecules	6
	Total formula weight	745.2
All*	Total formula weight	5981.7

*Water molecules are not included.