1X8W

Structure of the Tetrahymena Ribozyme: Base Triple Sandwich and Metal Ion at the Active Site

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 (A, B, C, D)	Tetrahymena ribozyme RNA	polymer	247	79966.4	4
2	AA, BA, CA, DA, E... (C, A, D, B)	MAGNESIUM ION	non-polymer		24.3	38	Chemie (MG)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	319865.8
Non-Polymers*	Number of molecules	38
	Total formula weight	923.6
All*	Total formula weight	320789.3

*Water molecules are not included.