4EYA

Crystal Structure of a Plectonemic RNA Supercoil

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D, E...	N utilization substance protein B homolog	polymer	148	17142.8	8	UniProt (O66530) Pfam (PF01029) In PDB	Aquifex aeolicus	Protein NusB
2	a, c, e, g, i...	RNA (5'-R(*GP*GP*CP*UP*CP*CP*UP*UP*GP*GP*CP*A)-3')	polymer	12	3804.3	20		synthetic construct
3	A, B, C, D, E...	GLYCEROL	non-polymer		92.1	12	Chemie (GOL)
4	B, D, F, H	SULFATE ION	non-polymer		96.1	4	Chemie (SO4)

Contents of the asymmetric unit

Polymers	Number of chains	28
	Total formula weight	213228.2
Non-Polymers*	Number of molecules	16
	Total formula weight	1489.4
All*	Total formula weight	214717.6

*Water molecules are not included.