2f03: Difference between revisions
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[[Image:2f03.jpg|left|200px]] | [[Image:2f03.jpg|left|200px]] | ||
'''Crystal structure of tetrameric restriction endonuclease SfiI in complex with cognate DNA (partial bound form)''' | {{Structure | ||
|PDB= 2f03 |SIZE=350|CAPTION= <scene name='initialview01'>2f03</scene>, resolution 3.050Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=CA:CALCIUM ION'>CA</scene> | |||
|ACTIVITY= [http://en.wikipedia.org/wiki/Type_II_site-specific_deoxyribonuclease Type II site-specific deoxyribonuclease], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.21.4 3.1.21.4] | |||
|GENE= | |||
}} | |||
'''Crystal structure of tetrameric restriction endonuclease SfiI in complex with cognate DNA (partial bound form)''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
2F03 is a [ | 2F03 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/ ]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2F03 OCA]. | ||
==Reference== | ==Reference== | ||
A view of consecutive binding events from structures of tetrameric endonuclease SfiI bound to DNA., Vanamee ES, Viadiu H, Kucera R, Dorner L, Picone S, Schildkraut I, Aggarwal AK, EMBO J. 2005 Dec 7;24(23):4198-208. Epub 2005 Nov 24. PMID:[http:// | A view of consecutive binding events from structures of tetrameric endonuclease SfiI bound to DNA., Vanamee ES, Viadiu H, Kucera R, Dorner L, Picone S, Schildkraut I, Aggarwal AK, EMBO J. 2005 Dec 7;24(23):4198-208. Epub 2005 Nov 24. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16308566 16308566] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
[[Category: Type II site-specific deoxyribonuclease]] | [[Category: Type II site-specific deoxyribonuclease]] | ||
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[[Category: type iif restriction endonuclease]] | [[Category: type iif restriction endonuclease]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 16:46:27 2008'' | ||
Revision as of 17:46, 20 March 2008
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| , resolution 3.050Å | |||||||
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| Ligands: | |||||||
| Activity: | Type II site-specific deoxyribonuclease, with EC number 3.1.21.4 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of tetrameric restriction endonuclease SfiI in complex with cognate DNA (partial bound form)
OverviewOverview
Many reactions in cells proceed via the sequestration of two DNA molecules in a synaptic complex. SfiI is a member of a growing family of restriction enzymes that can bind and cleave two DNA sites simultaneously. We present here the structures of tetrameric SfiI in complex with cognate DNA. The structures reveal two different binding states of SfiI: one with both DNA-binding sites fully occupied and the other with fully and partially occupied sites. These two states provide details on how SfiI recognizes and cleaves its target DNA sites, and gives insight into sequential binding events. The SfiI recognition sequence (GGCCNNNN[downward arrow]NGGCC) is a subset of the recognition sequence of BglI (GCCNNNN[downward arrow]NGGC), and both enzymes cleave their target DNAs to leave 3-base 3' overhangs. We show that even though SfiI is a tetramer and BglI is a dimer, and there is little sequence similarity between the two enzymes, their modes of DNA recognition are unusually similar.
About this StructureAbout this Structure
2F03 is a Single protein structure of sequence from [1]. Full crystallographic information is available from OCA.
ReferenceReference
A view of consecutive binding events from structures of tetrameric endonuclease SfiI bound to DNA., Vanamee ES, Viadiu H, Kucera R, Dorner L, Picone S, Schildkraut I, Aggarwal AK, EMBO J. 2005 Dec 7;24(23):4198-208. Epub 2005 Nov 24. PMID:16308566
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