4B5R

SAM-I riboswitch bearing the H. marismortui K-t-7

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	SAM-I RIBOSWITCH	polymer	94	30607.4	1		THERMOANAEROBACTER TENGCONGENSIS
2	B (A)	S-ADENOSYLMETHIONINE	non-polymer		398.4	1	Chemie (SAM)
3	C, F, H, K, L... (A)	BARIUM ION	non-polymer		137.3	12	Chemie (BA)
4	D, E, G, I, J... (A)	POTASSIUM ION	non-polymer		39.1	7	Chemie (K)

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	30607.4
Non-Polymers*	Number of molecules	20
	Total formula weight	2320.0
All*	Total formula weight	32927.4

*Water molecules are not included.