This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.
Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.
1m1f
From Proteopedia
(Difference between revisions)
| (One intermediate revision not shown.) | |||
| Line 3: | Line 3: | ||
<StructureSection load='1m1f' size='340' side='right'caption='[[1m1f]], [[Resolution|resolution]] 1.40Å' scene=''> | <StructureSection load='1m1f' size='340' side='right'caption='[[1m1f]], [[Resolution|resolution]] 1.40Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[1m1f]] is a 2 chain structure with sequence from [ | + | <table><tr><td colspan='2'>[[1m1f]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1M1F OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1M1F FirstGlance]. <br> |
| - | </td></tr><tr id=' | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.4Å</td></tr> |
| - | <tr id=' | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1m1f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1m1f OCA], [https://pdbe.org/1m1f PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1m1f RCSB], [https://www.ebi.ac.uk/pdbsum/1m1f PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1m1f ProSAT]</span></td></tr> |
</table> | </table> | ||
== Function == | == Function == | ||
| - | [ | + | [https://www.uniprot.org/uniprot/PEMK_ECOLX PEMK_ECOLX] Toxic component of a type II toxin-antitoxin (TA) module. Probably functions as an endoribonuclease. Responsible for the stable maintenance of the plasmid during cell division by postsegregational killing of plasmid-less daughter cells. Neutralized by coexpression with cognate antitoxin PemI. Both PemI and PemK proteins bind to the promoter region of the pem operon to autoregulate their synthesis.<ref>PMID:2832364</ref> <ref>PMID:8455570</ref> |
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
| Line 20: | Line 20: | ||
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1m1f ConSurf]. | </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1m1f ConSurf]. | ||
<div style="clear:both"></div> | <div style="clear:both"></div> | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | We have determined the structure of Kid toxin protein from E. coli plasmid R1 involved in stable plasmid inheritance by postsegregational killing of plasmid-less daughter cells. Kid forms a two-component system with its antagonist, Kis antitoxin. Our 1.4 A crystal structure of Kid reveals a 2-fold symmetric dimer that closely resembles the DNA gyrase-inhibitory toxin protein CcdB from E. coli F plasmid despite the lack of any notable sequence similarity. Analysis of nontoxic mutants of Kid suggests a target interaction interface associated with toxicity that is in marked contrast to that proposed for CcdB. A possible region for interaction of Kid with the antitoxin is proposed that overlaps with the target binding site and may explain the mode of antitoxin action. | ||
| - | |||
| - | Structural and functional analysis of the kid toxin protein from E. coli plasmid R1.,Hargreaves D, Santos-Sierra S, Giraldo R, Sabariegos-Jareno R, de la Cueva-Mendez G, Boelens R, Diaz-Orejas R, Rafferty JB Structure. 2002 Oct;10(10):1425-33. PMID:12377128<ref>PMID:12377128</ref> | ||
| - | |||
| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| - | </div> | ||
| - | <div class="pdbe-citations 1m1f" style="background-color:#fffaf0;"></div> | ||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| - | [[Category: | + | [[Category: Escherichia coli]] |
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
| - | [[Category: Boelens | + | [[Category: Boelens R]] |
| - | + | [[Category: Diaz-Orejas R]] | |
| - | [[Category: Diaz-Orejas | + | [[Category: Giraldo R]] |
| - | [[Category: Giraldo | + | [[Category: Hargreaves D]] |
| - | [[Category: Hargreaves | + | [[Category: Rafferty JB]] |
| - | [[Category: Rafferty | + | [[Category: Sabariegos-Jareno R]] |
| - | [[Category: Sabariegos-Jareno | + | [[Category: Santos-Sierra S]] |
| - | [[Category: Santos-Sierra | + | [[Category: De la Cueva-Mendez G]] |
| - | [[Category: | + | |
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
| - | + | ||
Current revision
Kid toxin protein from E.coli plasmid R1
| |||||||||||
