1mfk
From Proteopedia
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| - | [[Image:1mfk.gif|left|200px]] | + | [[Image:1mfk.gif|left|200px]] |
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| - | '''Structure of Prokaryotic SECIS mRNA Hairpin''' | + | {{Structure |
| + | |PDB= 1mfk |SIZE=350|CAPTION= <scene name='initialview01'>1mfk</scene> | ||
| + | |SITE= | ||
| + | |LIGAND= | ||
| + | |ACTIVITY= | ||
| + | |GENE= | ||
| + | }} | ||
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| + | '''Structure of Prokaryotic SECIS mRNA Hairpin''' | ||
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==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1MFK is a [ | + | 1MFK is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/ ]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1MFK OCA]. |
==Reference== | ==Reference== | ||
| - | Structure of prokaryotic SECIS mRNA hairpin and its interaction with elongation factor SelB., Fourmy D, Guittet E, Yoshizawa S, J Mol Biol. 2002 Nov 15;324(1):137-50. PMID:[http:// | + | Structure of prokaryotic SECIS mRNA hairpin and its interaction with elongation factor SelB., Fourmy D, Guittet E, Yoshizawa S, J Mol Biol. 2002 Nov 15;324(1):137-50. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12421564 12421564] |
[[Category: Protein complex]] | [[Category: Protein complex]] | ||
[[Category: Fourmy, D.]] | [[Category: Fourmy, D.]] | ||
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[[Category: selb]] | [[Category: selb]] | ||
| - | ''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 12:42:52 2008'' |
Revision as of 10:42, 20 March 2008
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| Coordinates: | save as pdb, mmCIF, xml | ||||||
Structure of Prokaryotic SECIS mRNA Hairpin
Overview
In prokaryotes, the recoding of a UGA stop codon as a selenocysteine codon requires a special elongation factor (EF) SelB and a stem-loop structure within the mRNA called a selenocysteine insertion sequence (SECIS). Here, we used NMR spectroscopy to determine the solution structure of the SECIS mRNA hairpin and characterized its interaction with the mRNA-binding domain of SelB. Our structural and biochemical data identified the conserved structural features important for binding to EF SelB within different SECIS RNA sequences. In the free SECIS mRNA structure, conserved nucleotides are strongly exposed for recognition by SelB. Binding of the C-terminal domain of SelB stabilizes the RNA secondary structure. In the protein-RNA complex, a Watson-Crick loop base-pair leaves a GpU sequence accessible for SelB recognition. This GpU sequence at the tip of the capping tetraloop and a bulge uracil five Watson-Crick base-pairs apart from the GpU are essential for interaction with SelB.
About this Structure
1MFK is a Protein complex structure of sequences from [1]. Full crystallographic information is available from OCA.
Reference
Structure of prokaryotic SECIS mRNA hairpin and its interaction with elongation factor SelB., Fourmy D, Guittet E, Yoshizawa S, J Mol Biol. 2002 Nov 15;324(1):137-50. PMID:12421564
Page seeded by OCA on Thu Mar 20 12:42:52 2008
