7ELS

Crystal structure of xanthine riboswitch with 8-azaxanthine

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)	NMT1_8-azaxanthine (46-MER)	polymer	45	14558.8	2		Ideonella sp. B508-1
2	C, L (A, B)	GUANOSINE-5'-TRIPHOSPHATE	non-polymer		523.2	2	Chemie (GTP)
3	D, E, F, G, H... (A, B)	MAGNESIUM ION	non-polymer		24.3	13	Chemie (MG)
4	K, S (A, B)	8-AZAXANTHINE	non-polymer		153.1	2	Chemie (AZA)
5	T, U (A, B)	water	water		18.0	46	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	29117.5
Non-Polymers*	Number of molecules	17
	Total formula weight	1668.5
All*	Total formula weight	30786.0

*Water molecules are not included.