1BP7

GROUP I MOBILE INTRON ENDONUCLEASE I-CREI COMPLEXED WITH HOMING SITE DNA

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	1, 3	DNA (5'-D(*GP*CP*AP*AP*AP*AP*CP*GP*TP*CP*GP*TP*GP*AP*GP*AP*CP*AP*GP*TP*TP*TP* CP*G)-3')	polymer	24	7418.8	2			HOMING SITE
2	2, 4	DNA (5'-D(*CP*GP*AP*AP*AP*CP*TP*GP*TP*CP*TP*CP*AP*CP*GP*AP*CP*GP*TP*TP*TP*TP* GP*C)-3')	polymer	24	7320.7	2			HOMING SITE
3	A, B, C, D	PROTEIN (I-CREI)	polymer	152	17516.1	4	UniProt (P05725) Pfam (PF00961) In PDB	Chlamydomonas reinhardtii	DNA ENDONUCLEASE I-CREI
4	1, 3, A, C	CALCIUM ION	non-polymer		40.1	4	Chemie (CA)
5		water	water		18.0	7	Chemie (HOH)

Sequence modifications

A, B, C, D: 2 - 153 (UniProt: P05725)

PDB	External Database	Details
Thr 42	Ala 42	SEE REMARK 999
Glu 110	Trp 110	SEE REMARK 999
Gln 111	Arg 111	SEE REMARK 999

Contents of the asymmetric unit

Polymers	Number of chains	8
	Total formula weight	99543.5
Non-Polymers*	Number of molecules	4
	Total formula weight	160.3
All*	Total formula weight	99703.9

*Water molecules are not included.