7cei: Difference between revisions

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==THE ENDONUCLEASE DOMAIN OF COLICIN E7 IN COMPLEX WITH ITS INHIBITOR IM7 PROTEIN==
==THE ENDONUCLEASE DOMAIN OF COLICIN E7 IN COMPLEX WITH ITS INHIBITOR IM7 PROTEIN==
<StructureSection load='7cei' size='340' side='right' caption='[[7cei]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
<StructureSection load='7cei' size='340' side='right'caption='[[7cei]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[7cei]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Ecow3 Ecow3]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7CEI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=7CEI FirstGlance]. <br>
<table><tr><td colspan='2'>[[7cei]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli_str._K-12_substr._W3110 Escherichia coli str. K-12 substr. W3110]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7CEI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7CEI FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></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]] 2.3&#8491;</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CEIE7 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=316407 ECOW3])</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</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=7cei FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7cei OCA], [http://pdbe.org/7cei PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=7cei RCSB], [http://www.ebi.ac.uk/pdbsum/7cei PDBsum]</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=7cei FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7cei OCA], [https://pdbe.org/7cei PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7cei RCSB], [https://www.ebi.ac.uk/pdbsum/7cei PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7cei ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/IMM7_ECOLX IMM7_ECOLX]] This protein is able to protect a cell, which harbors the plasmid ColE7 encoding colicin E7, against colicin E7, it binds specifically to the DNase-type colicin and inhibits its bactericidal activity. Dimeric ImmE7 may possess a RNase activity that cleaves its own mRNA at a specific site and thus autoregulates translational expression of the downstream ceiE7 gene as well as degradation of the upstream ceaE7 mRNA. [[http://www.uniprot.org/uniprot/CEA7_ECOLX CEA7_ECOLX]] This plasmid-coded bactericidal protein is an endonuclease active on both single- and double-stranded DNA but with undefined specificity.  Colicins are polypeptide toxins produced by and active against E.coli and closely related bacteria.  
[https://www.uniprot.org/uniprot/IMM7_ECOLX IMM7_ECOLX] This protein is able to protect a cell, which harbors the plasmid ColE7 encoding colicin E7, against colicin E7, it binds specifically to the DNase-type colicin and inhibits its bactericidal activity. Dimeric ImmE7 may possess a RNase activity that cleaves its own mRNA at a specific site and thus autoregulates translational expression of the downstream ceiE7 gene as well as degradation of the upstream ceaE7 mRNA.
== 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/ce/7cei_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ce/7cei_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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==See Also==
==See Also==
*[[Colicin|Colicin]]
*[[Colicin 3D structures|Colicin 3D structures]]
*[[Colicin Immunity Protein|Colicin Immunity Protein]]
*[[Colicin Immunity Protein|Colicin Immunity Protein]]
*[[Colicin Immunity Protein 7|Colicin Immunity Protein 7]]
*[[Colicin immunity protein 3D structures|Colicin immunity protein 3D structures]]
*[[Colicin Immunity Protein 9|Colicin Immunity Protein 9]]
*[[Directed evolution|Directed evolution]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Ecow3]]
[[Category: Escherichia coli str. K-12 substr. W3110]]
[[Category: Chak, K F]]
[[Category: Large Structures]]
[[Category: Ko, T P]]
[[Category: Chak KF]]
[[Category: Ku, W Y]]
[[Category: Ko TP]]
[[Category: Liao, C C]]
[[Category: Ku WY]]
[[Category: Yuan, H S]]
[[Category: Liao CC]]
[[Category: Dnase]]
[[Category: Yuan HS]]
[[Category: E-group colicin]]
[[Category: Immune system]]
[[Category: Protein recognition]]
[[Category: Protein-protein interaction]]

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