7ELR

Crystal structure of xanthine riboswitch with xanthine

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	NMT1 (46-MER)	polymer	45	14558.8	2		Ideonella sp. B508-1
2	A, B	GUANOSINE-5'-TRIPHOSPHATE	non-polymer		523.2	2	Chemie (GTP)
3	A, B	XANTHINE	non-polymer		152.1	2	Chemie (XAN)
4	A, B	MAGNESIUM ION	non-polymer		24.3	15	Chemie (MG)
5		water	water		18.0	54	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	29117.5
Non-Polymers*	Number of molecules	19
	Total formula weight	1715.2
All*	Total formula weight	30832.7

*Water molecules are not included.