4Y1M

An Escherichia coli yybP-ykoY Mn riboswitch in the Mn2+-free state

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (B, A)	E. coli yybP-ykoY riboswitch	polymer	107	34587.6	2		Escherichia coli
2	AA, AB, BA, BB, C... (B, A)	STRONTIUM ION	non-polymer		87.6	65	Chemie (SR)
3	M, VA, WA, WB, XA... (B, A)	MAGNESIUM ION	non-polymer		24.3	9	Chemie (MG)
4	GB, N (A, B)	GUANOSINE-5'-TRIPHOSPHATE	non-polymer		523.2	2	Chemie (GTP)
5	AC, BC (B, A)	water	water		18.0	72	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	69175.2
Non-Polymers*	Number of molecules	76
	Total formula weight	6960.4
All*	Total formula weight	76135.6

*Water molecules are not included.