2i3q: Difference between revisions
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|PDB= 2i3q |SIZE=350|CAPTION= <scene name='initialview01'>2i3q</scene>, resolution 2.300Å | |PDB= 2i3q |SIZE=350|CAPTION= <scene name='initialview01'>2i3q</scene>, resolution 2.300Å | ||
|SITE= | |SITE= | ||
|LIGAND= <scene name='pdbligand=CA:CALCIUM ION'>CA</scene> | |LIGAND= <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=DA:2'-DEOXYADENOSINE-5'-MONOPHOSPHATE'>DA</scene>, <scene name='pdbligand=DC:2'-DEOXYCYTIDINE-5'-MONOPHOSPHATE'>DC</scene>, <scene name='pdbligand=DG:2'-DEOXYGUANOSINE-5'-MONOPHOSPHATE'>DG</scene>, <scene name='pdbligand=DT:THYMIDINE-5'-MONOPHOSPHATE'>DT</scene> | ||
|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
|DOMAIN= | |||
|RELATEDENTRY=[[2i3p|2I3P]] | |||
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2i3q FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2i3q OCA], [http://www.ebi.ac.uk/pdbsum/2i3q PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2i3q RCSB]</span> | |||
}} | }} | ||
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[[Category: Rosen, L.]] | [[Category: Rosen, L.]] | ||
[[Category: Sussman, D.]] | [[Category: Sussman, D.]] | ||
[[Category: homing endonuclease]] | [[Category: homing endonuclease]] | ||
[[Category: i-crei]] | [[Category: i-crei]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 03:39:13 2008'' | ||
Revision as of 03:39, 31 March 2008
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| , resolution 2.300Å | |||||||
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| Ligands: | , , , , | ||||||
| Related: | 2I3P
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Q44V mutant of Homing Endonuclease I-CreI
OverviewOverview
Homing endonucleases are highly specific enzymes, capable of recognizing and cleaving unique DNA sequences in complex genomes. Since such DNA cleavage events can result in targeted allele-inactivation and/or allele-replacement in vivo, the ability to engineer homing endonucleases matched to specific DNA sequences of interest would enable powerful and precise genome manipulations. We have taken a step-wise genetic approach in analyzing individual homing endonuclease I-CreI protein/DNA contacts, and describe here novel interactions at four distinct target site positions. Crystal structures of two mutant endonucleases reveal the molecular interactions responsible for their altered DNA target specificities. We also combine novel contacts to create an endonuclease with the predicted target specificity. These studies provide important insights into engineering homing endonucleases with novel target specificities, as well as into the evolution of DNA recognition by this fascinating family of proteins.
About this StructureAbout this Structure
2I3Q is a Single protein structure of sequence from Chlamydomonas reinhardtii. Full crystallographic information is available from OCA.
ReferenceReference
Homing endonuclease I-CreI derivatives with novel DNA target specificities., Rosen LE, Morrison HA, Masri S, Brown MJ, Springstubb B, Sussman D, Stoddard BL, Seligman LM, Nucleic Acids Res. 2006;34(17):4791-800. Epub 2006 Sep 13. PMID:16971456
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