4DS6

Crystal structure of a group II intron in the pre-catalytic state

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Mutant Group IIC Intron	polymer	422	136900.1	1		Oceanobacillus iheyensis
2	A	MAGNESIUM ION	non-polymer		24.3	16	Chemie (MG)
3		water	water		18.0	29	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	136900.1
Non-Polymers*	Number of molecules	16
	Total formula weight	388.9
All*	Total formula weight	137288.9

*Water molecules are not included.