2q2u
From Proteopedia
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| - | [[Image:2q2u.gif|left|200px]] | + | [[Image:2q2u.gif|left|200px]] |
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| - | '''Structure of Chlorella virus DNA ligase-product DNA complex''' | + | {{Structure |
| + | |PDB= 2q2u |SIZE=350|CAPTION= <scene name='initialview01'>2q2u</scene>, resolution 3.000Å | ||
| + | |SITE= | ||
| + | |LIGAND= | ||
| + | |ACTIVITY= | ||
| + | |GENE= A544R ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10506 Paramecium bursaria Chlorella virus 1]) | ||
| + | }} | ||
| + | |||
| + | '''Structure of Chlorella virus DNA ligase-product DNA complex''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 2Q2U is a [ | + | 2Q2U is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Paramecium_bursaria_chlorella_virus_1 Paramecium bursaria chlorella virus 1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2Q2U OCA]. |
==Reference== | ==Reference== | ||
| - | Structural basis for nick recognition by a minimal pluripotent DNA ligase., Nair PA, Nandakumar J, Smith P, Odell M, Lima CD, Shuman S, Nat Struct Mol Biol. 2007 Aug;14(8):770-8. Epub 2007 Jul 8. PMID:[http:// | + | Structural basis for nick recognition by a minimal pluripotent DNA ligase., Nair PA, Nandakumar J, Smith P, Odell M, Lima CD, Shuman S, Nat Struct Mol Biol. 2007 Aug;14(8):770-8. Epub 2007 Jul 8. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17618295 17618295] |
[[Category: Paramecium bursaria chlorella virus 1]] | [[Category: Paramecium bursaria chlorella virus 1]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: protein-dna complex]] | [[Category: protein-dna complex]] | ||
| - | ''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 18:20:56 2008'' |
Revision as of 16:20, 20 March 2008
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| , resolution 3.000Å | |||||||
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| Gene: | A544R (Paramecium bursaria Chlorella virus 1) | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Structure of Chlorella virus DNA ligase-product DNA complex
Overview
Chlorella virus DNA ligase, the smallest eukaryotic ligase known, has pluripotent biological activity and an intrinsic nick-sensing function, despite having none of the accessory domains found in cellular ligases. A 2.3-A crystal structure of the Chlorella virus ligase-AMP intermediate bound to duplex DNA containing a 3'-OH-5'-PO4 nick reveals a new mode of DNA envelopment, in which a short surface loop emanating from the OB domain forms a beta-hairpin 'latch' that inserts into the DNA major groove flanking the nick. A network of interactions with the 3'-OH and 5'-PO4 termini in the active site illuminates the DNA adenylylation mechanism and the crucial roles of AMP in nick sensing and catalysis. Addition of a divalent cation triggered nick sealing in crystallo, establishing that the nick complex is a bona fide intermediate in the DNA repair pathway.
About this Structure
2Q2U is a Single protein structure of sequence from Paramecium bursaria chlorella virus 1. Full crystallographic information is available from OCA.
Reference
Structural basis for nick recognition by a minimal pluripotent DNA ligase., Nair PA, Nandakumar J, Smith P, Odell M, Lima CD, Shuman S, Nat Struct Mol Biol. 2007 Aug;14(8):770-8. Epub 2007 Jul 8. PMID:17618295
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