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2f8t
From Proteopedia
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| - | [[Image:2f8t.gif|left|200px]] | + | [[Image:2f8t.gif|left|200px]] |
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| - | '''Crystal structure of Aa-Ago with externally-bound siRNA''' | + | {{Structure |
| + | |PDB= 2f8t |SIZE=350|CAPTION= <scene name='initialview01'>2f8t</scene>, resolution 3.10Å | ||
| + | |SITE= | ||
| + | |LIGAND= | ||
| + | |ACTIVITY= | ||
| + | |GENE= | ||
| + | }} | ||
| + | |||
| + | '''Crystal structure of Aa-Ago with externally-bound siRNA''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 2F8T is a [ | + | 2F8T is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Aquifex_aeolicus Aquifex aeolicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2F8T OCA]. |
==Reference== | ==Reference== | ||
| - | A potential protein-RNA recognition event along the RISC-loading pathway from the structure of A. aeolicus Argonaute with externally bound siRNA., Yuan YR, Pei Y, Chen HY, Tuschl T, Patel DJ, Structure. 2006 Oct;14(10):1557-65. PMID:[http:// | + | A potential protein-RNA recognition event along the RISC-loading pathway from the structure of A. aeolicus Argonaute with externally bound siRNA., Yuan YR, Pei Y, Chen HY, Tuschl T, Patel DJ, Structure. 2006 Oct;14(10):1557-65. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17027504 17027504] |
[[Category: Aquifex aeolicus]] | [[Category: Aquifex aeolicus]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: sirna]] | [[Category: sirna]] | ||
| - | ''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 16:49:31 2008'' |
Revision as of 14:49, 20 March 2008
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| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal structure of Aa-Ago with externally-bound siRNA
Overview
Argonaute proteins are key components of the RNA-induced silencing complex (RISC). They provide both architectural and catalytic functionalities associated with small interfering RNA (siRNA) guide strand recognition and subsequent guide strand-mediated cleavage of complementary mRNAs. We report on the 3.0 A crystal structures of 22-mer and 26-mer siRNAs bound to Aquifex aeolicus Argonaute (Aa-Ago), where one 2 nt 3' overhang of the siRNA inserts into a cavity positioned on the outer surface of the PAZ-containing lobe of the bilobal Aa-Ago architecture. The first overhang nucleotide stacks over a tyrosine ring, while the second overhang nucleotide, together with the intervening sugar-phosphate backbone, inserts into a preformed surface cavity. Photochemical crosslinking studies on Aa-Ago with 5-iodoU-labeled single-stranded siRNA and siRNA duplex provide support for this externally bound siRNA-Aa-Ago complex. The structure and biochemical data together provide insights into a protein-RNA recognition event potentially associated with the RISC-loading pathway.
About this Structure
2F8T is a Single protein structure of sequence from Aquifex aeolicus. Full crystallographic information is available from OCA.
Reference
A potential protein-RNA recognition event along the RISC-loading pathway from the structure of A. aeolicus Argonaute with externally bound siRNA., Yuan YR, Pei Y, Chen HY, Tuschl T, Patel DJ, Structure. 2006 Oct;14(10):1557-65. PMID:17027504
Page seeded by OCA on Thu Mar 20 16:49:31 2008
