2fu2: Difference between revisions
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==Crystal structure of protein SPy2152 from Streptococcus pyogenes== | ==Crystal structure of protein SPy2152 from Streptococcus pyogenes== | ||
<StructureSection load='2fu2' size='340' side='right' caption='[[2fu2]], [[Resolution|resolution]] 2.15Å' scene=''> | <StructureSection load='2fu2' size='340' side='right' caption='[[2fu2]], [[Resolution|resolution]] 2.15Å' scene=''> | ||
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<table><tr><td colspan='2'>[[2fu2]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"micrococcus_scarlatinae"_klein_1884 "micrococcus scarlatinae" klein 1884]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FU2 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2FU2 FirstGlance]. <br> | <table><tr><td colspan='2'>[[2fu2]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"micrococcus_scarlatinae"_klein_1884 "micrococcus scarlatinae" klein 1884]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FU2 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2FU2 FirstGlance]. <br> | ||
</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr> | </td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></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=2fu2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fu2 OCA], [http://pdbe.org/2fu2 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2fu2 RCSB], [http://www.ebi.ac.uk/pdbsum/2fu2 PDBsum], [http://www.topsan.org/Proteins/MCSG/2fu2 TOPSAN]</span></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=2fu2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fu2 OCA], [http://pdbe.org/2fu2 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2fu2 RCSB], [http://www.ebi.ac.uk/pdbsum/2fu2 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2fu2 ProSAT], [http://www.topsan.org/Proteins/MCSG/2fu2 TOPSAN]</span></td></tr> | ||
</table> | </table> | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
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Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/fu/2fu2_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/fu/2fu2_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> | ||
Revision as of 09:43, 20 June 2018
Crystal structure of protein SPy2152 from Streptococcus pyogenesCrystal structure of protein SPy2152 from Streptococcus pyogenes
Structural highlights
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 PubMedBACKGROUND: Many Gram-positive lactic acid bacteria (LAB) produce anti-bacterial peptides and small proteins called bacteriocins, which enable them to compete against other bacteria in the environment. These peptides fall structurally into three different classes, I, II, III, with class IIa being pediocin-like single entities and class IIb being two-peptide bacteriocins. Self-protective cognate immunity proteins are usually co-transcribed with these toxins. Several examples of cognates for IIa have already been solved structurally. Streptococcus pyogenes, closely related to LAB, is one of the most common human pathogens, so knowledge of how it competes against other LAB species is likely to prove invaluable. RESULTS: We have solved the crystal structure of the gene-product of locus Spy_2152 from S. pyogenes, (PDB:2fu2), and found it to comprise an anti-parallel four-helix bundle that is structurally similar to other bacteriocin immunity proteins. Sequence analyses indicate this protein to be a possible immunity protein protective against class IIa or IIb bacteriocins. However, given that S. pyogenes appears to lack any IIa pediocin-like proteins but does possess class IIb bacteriocins, we suggest this protein confers immunity to IIb-like peptides. CONCLUSIONS: Combined structural, genomic and proteomic analyses have allowed the identification and in silico characterization of a new putative immunity protein from S. pyogenes, possibly the first structure of an immunity protein protective against potential class IIb two-peptide bacteriocins. We have named the two pairs of putative bacteriocins found in S. pyogenes pyogenecin 1, 2, 3 and 4. The structure of pyogenecin immunity protein, a novel bacteriocin-like immunity protein from Streptococcus pyogenes.,Chang C, Coggill P, Bateman A, Finn RD, Cymborowski M, Otwinowski Z, Minor W, Volkart L, Joachimiak A BMC Struct Biol. 2009 Dec 17;9:75. PMID:20017931[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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