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| | ==F6 APTAMER MS2 COAT PROTEIN COMPLEX== | | ==F6 APTAMER MS2 COAT PROTEIN COMPLEX== |
| - | <StructureSection load='6msf' size='340' side='right' caption='[[6msf]], [[Resolution|resolution]] 2.80Å' scene=''> | + | <StructureSection load='6msf' size='340' side='right'caption='[[6msf]], [[Resolution|resolution]] 2.80Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[6msf]] is a 5 chain structure with sequence from [http://en.wikipedia.org/wiki/Bacteriophage_ms2 Bacteriophage ms2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6MSF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6MSF FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[6msf]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_phage_MS2 Escherichia phage MS2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6MSF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6MSF FirstGlance]. <br> |
| - | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">COAT PROTEIN ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=12022 Bacteriophage MS2])</td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.8Å</td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6msf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6msf OCA], [http://pdbe.org/6msf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6msf RCSB], [http://www.ebi.ac.uk/pdbsum/6msf PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6msf ProSAT]</span></td></tr> | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=6msf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6msf OCA], [https://pdbe.org/6msf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6msf RCSB], [https://www.ebi.ac.uk/pdbsum/6msf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6msf ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/COAT_BPMS2 COAT_BPMS2]] Forms the phage shell; binds to the phage RNA. | + | [https://www.uniprot.org/uniprot/CAPSD_BPMS2 CAPSD_BPMS2] Self-assembles to form the T=3 icosahedral virus shell that protects the viral nucleic acid. Acts as a translational repressor by binding with high specificity to a single stem-loop structure in the genomic RNA that contains the initiation codon of the gene for the viral replicase. Involved in virus assembly through the interaction between a capsid protein dimer and the multiple packaging signals present in the RNA genome.<ref>PMID:16531233</ref> <ref>PMID:18662904</ref> <ref>PMID:26608810</ref> <ref>PMID:8254664</ref> <ref>PMID:9245600</ref> <ref>PMID:9469847</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
| | Check<jmol> | | Check<jmol> |
| | <jmolCheckbox> | | <jmolCheckbox> |
| - | <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ms/6msf_consurf.spt"</scriptWhenChecked> | + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ms/6msf_consurf.spt"</scriptWhenChecked> |
| | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> |
| | <text>to colour the structure by Evolutionary Conservation</text> | | <text>to colour the structure by Evolutionary Conservation</text> |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Bacteriophage ms2]] | + | [[Category: Escherichia phage MS2]] |
| - | [[Category: Convery, M A]] | + | [[Category: Large Structures]] |
| - | [[Category: Ellington, A D]] | + | [[Category: Convery MA]] |
| - | [[Category: Hirao, I]] | + | [[Category: Ellington AD]] |
| - | [[Category: Murray, J B]] | + | [[Category: Hirao I]] |
| - | [[Category: Peabody, D S]] | + | [[Category: Murray JB]] |
| - | [[Category: Phillips, S E.V]] | + | [[Category: Peabody DS]] |
| - | [[Category: Rowsell, S]] | + | [[Category: Phillips SEV]] |
| - | [[Category: Stockley, P G]] | + | [[Category: Rowsell S]] |
| - | [[Category: Stonehouse, N J]] | + | [[Category: Stockley PG]] |
| - | [[Category: Icosahedral virus]]
| + | [[Category: Stonehouse NJ]] |
| - | [[Category: Rna aptamer]]
| + | |
| - | [[Category: Rna stem loop]]
| + | |
| - | [[Category: Viral coat protein-rna complex]]
| + | |
| - | [[Category: Virus-rna complex]]
| + | |
| Structural highlights
Function
CAPSD_BPMS2 Self-assembles to form the T=3 icosahedral virus shell that protects the viral nucleic acid. Acts as a translational repressor by binding with high specificity to a single stem-loop structure in the genomic RNA that contains the initiation codon of the gene for the viral replicase. Involved in virus assembly through the interaction between a capsid protein dimer and the multiple packaging signals present in the RNA genome.[1] [2] [3] [4] [5] [6]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
The crystal structure, at 2.8 A resolution, of an RNA aptamer bound to bacteriophage MS2 coat protein has been determined. It provides an opportunity to compare the interactions of MS2 coat protein and wild type operator with those of an aptamer, whose secondary structure differs from the wild type RNA in having a three-base loop (compared to a tetraloop) and an additional base pair between this loop and the sequence-specific recognition element in the stem. The RNA binds in the same location on the coat protein as the wild type operator and maintains many of the same RNA-protein interactions. In order to achieve this, the RNA stem loop undergoes a concerted rearrangement of the 3' side while leaving the 5' side and the loop interactions largely unchanged, illustrating the ability of RNA to present similar molecular recognition surfaces from distinct primary and secondary structures.
Crystal structure of an RNA aptamer-protein complex at 2.8 A resolution.,Convery MA, Rowsell S, Stonehouse NJ, Ellington AD, Hirao I, Murray JB, Peabody DS, Phillips SE, Stockley PG Nat Struct Biol. 1998 Feb;5(2):133-9. PMID:9461079[7]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Horn WT, Tars K, Grahn E, Helgstrand C, Baron AJ, Lago H, Adams CJ, Peabody DS, Phillips SE, Stonehouse NJ, Liljas L, Stockley PG. Structural basis of RNA binding discrimination between bacteriophages Qbeta and MS2. Structure. 2006 Mar;14(3):487-95. PMID:16531233 doi:http://dx.doi.org/10.1016/j.str.2005.12.006
- ↑ Plevka P, Tars K, Liljas L. Crystal packing of a bacteriophage MS2 coat protein mutant corresponds to octahedral particles. Protein Sci. 2008 Oct;17(10):1731-9. Epub 2008 Jul 28. PMID:18662904 doi:10.1110/ps.036905.108
- ↑ Rolfsson O, Middleton S, Manfield IW, White SJ, Fan B, Vaughan R, Ranson NA, Dykeman E, Twarock R, Ford J, Kao CC, Stockley PG. Direct Evidence for Packaging Signal-Mediated Assembly of Bacteriophage MS2. J Mol Biol. 2016 Jan 29;428(2 Pt B):431-48. doi: 10.1016/j.jmb.2015.11.014. Epub , 2015 Dec 1. PMID:26608810 doi:http://dx.doi.org/10.1016/j.jmb.2015.11.014
- ↑ Golmohammadi R, Valegard K, Fridborg K, Liljas L. The refined structure of bacteriophage MS2 at 2.8 A resolution. J Mol Biol. 1993 Dec 5;234(3):620-39. PMID:8254664 doi:http://dx.doi.org/10.1006/jmbi.1993.1616
- ↑ Valegard K, Murray JB, Stonehouse NJ, van den Worm S, Stockley PG, Liljas L. The three-dimensional structures of two complexes between recombinant MS2 capsids and RNA operator fragments reveal sequence-specific protein-RNA interactions. J Mol Biol. 1997 Aug 1;270(5):724-38. PMID:9245600 doi:http://dx.doi.org/10.1006/jmbi.1997.1144
- ↑ van den Worm SH, Stonehouse NJ, Valegard K, Murray JB, Walton C, Fridborg K, Stockley PG, Liljas L. Crystal structures of MS2 coat protein mutants in complex with wild-type RNA operator fragments. Nucleic Acids Res. 1998 Mar 1;26(5):1345-51. PMID:9469847
- ↑ Convery MA, Rowsell S, Stonehouse NJ, Ellington AD, Hirao I, Murray JB, Peabody DS, Phillips SE, Stockley PG. Crystal structure of an RNA aptamer-protein complex at 2.8 A resolution. Nat Struct Biol. 1998 Feb;5(2):133-9. PMID:9461079
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