3t20: Difference between revisions

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<StructureSection load='3t20' size='340' side='right'caption='[[3t20]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
<StructureSection load='3t20' size='340' side='right'caption='[[3t20]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3t20]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/"bacillus_aeruginosus"_(schroeter_1872)_trevisan_1885 "bacillus aeruginosus" (schroeter 1872) trevisan 1885]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3T20 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3T20 FirstGlance]. <br>
<table><tr><td colspan='2'>[[3t20]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Pseudomonas_aeruginosa Pseudomonas aeruginosa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3T20 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3T20 FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[3sy7|3sy7]], [[3sy9|3sy9]], [[3syb|3syb]], [[3sys|3sys]], [[3szd|3szd]], [[3szv|3szv]], [[3t0s|3t0s]], [[3t24|3t24]]</div></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]] 2.6&#8491;</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">opdH, PA0755 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=287 "Bacillus aeruginosus" (Schroeter 1872) Trevisan 1885])</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=3t20 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3t20 OCA], [https://pdbe.org/3t20 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3t20 RCSB], [https://www.ebi.ac.uk/pdbsum/3t20 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3t20 ProSAT]</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=3t20 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3t20 OCA], [https://pdbe.org/3t20 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3t20 RCSB], [https://www.ebi.ac.uk/pdbsum/3t20 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3t20 ProSAT]</span></td></tr>
</table>
</table>
<div style="background-color:#fffaf0;">
== Function ==
== Publication Abstract from PubMed ==
[https://www.uniprot.org/uniprot/Q9I5H4_PSEAE Q9I5H4_PSEAE]
Many Gram-negative bacteria, including human pathogens such as Pseudomonas aeruginosa, do not have large-channel porins. This results in an outer membrane (OM) that is highly impermeable to small polar molecules, making the bacteria intrinsically resistant towards many antibiotics. In such microorganisms, the majority of small molecules are taken up by members of the OprD outer membrane protein family. Here we show that OprD channels require a carboxyl group in the substrate for efficient transport, and based on this we have renamed the family Occ, for outer membrane carboxylate channels. We further show that Occ channels can be divided into two subfamilies, based on their very different substrate specificities. Our results rationalize how certain bacteria can efficiently take up a variety of substrates under nutrient-poor conditions without compromising membrane permeability. In addition, they explain how channel inactivation in response to antibiotics can cause resistance but does not lead to decreased fitness.
 
Substrate Specificity within a Family of Outer Membrane Carboxylate Channels.,Eren E, Vijayaraghavan J, Liu J, Cheneke BR, Touw DS, Lepore BW, Indic M, Movileanu L, van den Berg B PLoS Biol. 2012 Jan;10(1):e1001242. Epub 2012 Jan 17. PMID:22272184<ref>PMID:22272184</ref>
 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3t20" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Porin 3D structures|Porin 3D structures]]
*[[Porin 3D structures|Porin 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Berg, B van den]]
[[Category: Pseudomonas aeruginosa]]
[[Category: Eren, E]]
[[Category: Eren E]]
[[Category: Bacterial outer membrane]]
[[Category: Van den Berg B]]
[[Category: Beta-barrel]]
[[Category: Channel]]
[[Category: Membrane protein]]

Latest revision as of 09:58, 1 March 2024

Crystal structure of Pseudomonas aeruginosa OccK5 (OpdH)

3t20, resolution 2.60Å

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