3R4F

Prohead RNA

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	pRNA	polymer	66	21189.5	1
2	B, C, D, E, F... (A)	MAGNESIUM ION	non-polymer		24.3	9	Chemie (MG) PubChem (888)
3	K (A)	water	water		18.0	3	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	21189.5
Non-Polymers*	Number of molecules	9
	Total formula weight	218.7
All*	Total formula weight	21408.2

*Water molecules are not included.