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Crystal structure of Diels-Alder ribozyme

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C	Diels-Alder ribozyme	polymer	11	3497.1	2
2	B, D	Diels-Alder ribozyme	polymer	38	12262.3	2
3	A, B, D	CADMIUM ION	non-polymer		112.4	5	Chemie (CD)
4	B, C, D	MAGNESIUM ION	non-polymer		24.3	7	Chemie (MG)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	31519.0
Non-Polymers*	Number of molecules	12
	Total formula weight	732.2
All*	Total formula weight	32251.1

*Water molecules are not included.