1m1f

From Proteopedia

(Difference between revisions)

Revision as of 14:58, 12 October 2017

Kid toxin protein from E.coli plasmid R1

Structural highlights

1m1f is a 2 chain structure with sequence from "bacillus_coli"_migula_1895 "bacillus coli" migula 1895. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Related:	4vub
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[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.^[1] ^[2]

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

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^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Tsuchimoto S, Ohtsubo H, Ohtsubo E. Two genes, pemK and pemI, responsible for stable maintenance of resistance plasmid R100. J Bacteriol. 1988 Apr;170(4):1461-6. PMID:2832364
↑ Tsuchimoto S, Ohtsubo E. Autoregulation by cooperative binding of the PemI and PemK proteins to the promoter region of the pem operon. Mol Gen Genet. 1993 Feb;237(1-2):81-8. PMID:8455570
↑ Hargreaves D, Santos-Sierra S, Giraldo R, Sabariegos-Jareno R, de la Cueva-Mendez G, Boelens R, Diaz-Orejas R, Rafferty JB. Structural and functional analysis of the kid toxin protein from E. coli plasmid R1. Structure. 2002 Oct;10(10):1425-33. PMID:12377128

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1m1f"

@@ Line 1: / Line 1: @@
 ==Kid toxin protein from E.coli plasmid R1==
 <StructureSection load='1m1f' size='340' side='right' caption='[[1m1f]], [[Resolution|resolution]] 1.40&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4vub|4vub]]</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=1m1f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1m1f OCA], [http://pdbe.org/1m1f PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1m1f RCSB], [http://www.ebi.ac.uk/pdbsum/1m1f PDBsum]</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=1m1f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1m1f OCA], [http://pdbe.org/1m1f PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1m1f RCSB], [http://www.ebi.ac.uk/pdbsum/1m1f PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1m1f ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 17: / Line 18: @@
     <text>to colour the structure by Evolutionary Conservation</text>
   </jmolCheckbox>
-</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/chain_selection.php?pdb_ID=2ata 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="background-color:#fffaf0;">

1m1f

From Proteopedia

Revision as of 14:58, 12 October 2017

Kid toxin protein from E.coli plasmid R1

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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