3bp8: Difference between revisions

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[[Image:3bp8.png|left|200px]]


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==Crystal structure of Mlc/EIIB complex==
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<StructureSection load='3bp8' size='340' side='right'caption='[[3bp8]], [[Resolution|resolution]] 2.85&Aring;' scene=''>
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== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[3bp8]] is a 4 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=3BP8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3BP8 FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.85&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
{{STRUCTURE_3bp8|  PDB=3bp8  |  SCENE=  }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3bp8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3bp8 OCA], [https://pdbe.org/3bp8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3bp8 RCSB], [https://www.ebi.ac.uk/pdbsum/3bp8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3bp8 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/MLC_ECOLI MLC_ECOLI] Transcriptional repressor that regulates the expression of proteins that are part of the phosphotransferase system for sugar uptake. Regulates the expression of malT.<ref>PMID:10464268</ref> <ref>PMID:11361067</ref>
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/bp/3bp8_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <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/main_output.php?pdb_ID=3bp8 ConSurf].
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== Publication Abstract from PubMed ==
In Escherichia coli, glucose-dependent transcriptional induction of genes encoding a variety of sugar-metabolizing enzymes and transport systems is mediated by the phosphorylation state-dependent interaction of membrane-bound enzyme IICB(Glc) (EIICB(Glc)) with the global repressor Mlc. Here we report the crystal structure of a tetrameric Mlc in a complex with four molecules of enzyme IIB(Glc) (EIIB), the cytoplasmic domain of EIICB(Glc). Each monomer of Mlc has one bound EIIB molecule, indicating the 1:1 stoichiometry. The detailed view of the interface, along with the high-resolution structure of EIIB containing a sulfate ion at the phosphorylation site, suggests that the phosphorylation-induced steric hindrance and disturbance of polar intermolecular interactions impede complex formation. Furthermore, we reveal that Mlc possesses a built-in flexibility for the structural adaptation to its target DNA and that interaction of Mlc with EIIB fused only to dimeric proteins resulted in the loss of its DNA binding ability, suggesting that flexibility of the Mlc structure is indispensable for its DNA binding.


===Crystal structure of Mlc/EIIB complex===
Analyses of Mlc-IIBGlc interaction and a plausible molecular mechanism of Mlc inactivation by membrane sequestration.,Nam TW, Jung HI, An YJ, Park YH, Lee SH, Seok YJ, Cha SS Proc Natl Acad Sci U S A. 2008 Mar 11;105(10):3751-6. Epub 2008 Mar 4. PMID:18319344<ref>PMID:18319344</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 3bp8" style="background-color:#fffaf0;"></div>


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==See Also==
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*[[Phosphotransferase 3D structures|Phosphotransferase 3D structures]]
(as it appears on PubMed at http://www.pubmed.gov), where 18319344 is the PubMed ID number.
== References ==
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<references/>
{{ABSTRACT_PUBMED_18319344}}
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</StructureSection>
==About this Structure==
3BP8 is a 4 chains structure of sequences from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BP8 OCA].
 
==Reference==
<ref group="xtra">PMID:18319344</ref><references group="xtra"/>
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: An, Y J.]]
[[Category: Large Structures]]
[[Category: Cha, S S.]]
[[Category: An YJ]]
[[Category: Jung, H I.]]
[[Category: Cha SS]]
[[Category: Enzyme]]
[[Category: Jung HI]]
[[Category: Glucose signaling]]
[[Category: Iicbglc]]
[[Category: Inner membrane]]
[[Category: Kinase]]
[[Category: Membrane]]
[[Category: Mlc]]
[[Category: Phosphoprotein]]
[[Category: Phosphotransferase system]]
[[Category: Protein-protein interaction]]
[[Category: Sugar transport]]
[[Category: Transcription regulation]]
[[Category: Transferase]]
[[Category: Transmembrane]]
[[Category: Transport]]
 
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