4PHY

Functional conservation despite structural divergence in ligand-responsive RNA switches

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	RNA (26-MER)	polymer	26	8206.9	1		Seneca valley virus
2	B (B)	RNA (5'-R(*GP*CP*AP*GP*GP*AP*AP*CP*CP*GP*AP*GP*AP*GP*GP*CP*AP*CP*GP*C)-3')	polymer	20	6523.0	1		Seneca valley virus
3	C, D (A, B)	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
4	E, F (B)	ACETATE ION	non-polymer		59.0	2	Chemie (ACT)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	14729.9
Non-Polymers*	Number of molecules	4
	Total formula weight	166.7
All*	Total formula weight	14896.6

*Water molecules are not included.