1R7M

The homing endonuclease I-SceI bound to its DNA recognition region

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	C, E	5'-D(*CP*AP*CP*GP*CP*TP*AP*GP*GP*GP*AP*TP*AP*AP*CP*AP*GP*GP*GP*TP*AP*AP*TP*AP*C)-3'	polymer	25	7741.0	2
2	D, F	5'-D(*GP*GP*TP*AP*TP*TP*AP*CP*CP*CP*TP*GP*TP*TP*AP*TP*CP*CP*CP*TP*AP*GP*CP*GP*T)-3'	polymer	25	7615.9	2
3	A, B	Intron-encoded endonuclease I-SceI	polymer	235	27717.2	2	UniProt (P03882) Pfam (PF03161) In PDB	Saccharomyces cerevisiae (baker's yeast)	21S rRNA intron maturase, Homing endonuclease omega
4	C, E, A, B	CALCIUM ION	non-polymer		40.1	6	Chemie (CA)
5		water	water		18.0	201	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	86148.3
Non-Polymers*	Number of molecules	6
	Total formula weight	240.5
All*	Total formula weight	86388.8

*Water molecules are not included.