3G78

Insight into group II intron catalysis from revised crystal structure

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	Group II intron	polymer	412	133652.2	1		Oceanobacillus iheyensis
2	B (Z)	Ligated EXON product	polymer	9	2772.6	1
3	AA, AC, BA, C, CA... (A, Z)	MAGNESIUM ION	non-polymer		24.3	51	Chemie (MG)
4	AB, BB, CB, DB, EB... (A)	POTASSIUM ION	non-polymer		39.1	26	Chemie (K)
5	BC, CC (A, Z)	water	water		18.0	435	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	136424.8
Non-Polymers*	Number of molecules	77
	Total formula weight	2256.1
All*	Total formula weight	138680.9

*Water molecules are not included.