8I3Z

Crystal structure of NAD-II riboswitch (two strands) with NMN at 1.67 angstrom

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	RNA (5'-R(*AP*GP*AP*GP*CP*GP*UP*UP*GP*CP*GP*UP*CP*CP*GP*AP*AP*AP*GP*UP*(CBV)P*GP*CP*C)-3')	polymer	24	7802.6	1		Streptococcus parasanguinis
2	B	RNA (31-MER)	polymer	31	10036.1	1		Streptococcus parasanguinis
3	A, B	SODIUM ION	non-polymer		23.0	4	Chemie (NA)
4	B	BETA-NICOTINAMIDE RIBOSE MONOPHOSPHATE	non-polymer		335.2	2	Chemie (NMN)
5		water	water		18.0	146	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	17838.7
Non-Polymers*	Number of molecules	6
	Total formula weight	762.4
All*	Total formula weight	18601.1

*Water molecules are not included.