5hm4
From Proteopedia
(Difference between revisions)
(New page: '''Unreleased structure''' The entry 5hm4 is ON HOLD Authors: Lu, X., Ghimire-Rijal, S., Myles, D.A.A., Cuneo, M.J. Description: Crystal structure of oligopeptide ABC transporter, peri...) |
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| - | '''Unreleased structure''' | ||
| - | + | ==Crystal structure of oligopeptide ABC transporter, periplasmic oligopeptide-binding protein (TM1226) from THERMOTOGA MARITIMA at 2.0 A resolution== | |
| + | <StructureSection load='5hm4' size='340' side='right'caption='[[5hm4]], [[Resolution|resolution]] 2.00Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[5hm4]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5HM4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5HM4 FirstGlance]. <br> | ||
| + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2Å</td></tr> | ||
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></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=5hm4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5hm4 OCA], [https://pdbe.org/5hm4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5hm4 RCSB], [https://www.ebi.ac.uk/pdbsum/5hm4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5hm4 ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/Q9X0V3_THEMA Q9X0V3_THEMA] | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | The ligand-induced conformational changes of periplasmic binding proteins (PBP) play a key role in the acquisition of metabolites in ATP binding cassette (ABC) transport systems. This conformational change allows for differential recognition of the ligand occupancy of the PBP by the ABC transporter. This minimizes futile ATP hydrolysis in the transporter, a phenomenon in which ATP hydrolysis is not coupled to metabolite transport. In many systems, the PBP conformational change is insufficient at eliminating futile ATP hydrolysis. Here we identify an additional state of the PBP that is also allosterically regulated by the ligand. Ligand binding to the homodimeric apo PBP leads to a tightening of the interface alpha-helices so that the hydrogen bonding pattern shifts to that of a 310 helix, in-turn altering the contacts and the dynamics of the protein interface so that the monomer exists in the presence of ligand. | ||
| - | + | Periplasmic Binding Protein Dimer Has a Second Allosteric Event Tied to Ligand Binding.,Li L, Ghimire-Rijal S, Lucas SL, Stanley CB, Wright E, Agarwal PK, Myles DA, Cuneo MJ Biochemistry. 2017 Oct 10;56(40):5328-5337. doi: 10.1021/acs.biochem.7b00657., Epub 2017 Sep 22. PMID:28876049<ref>PMID:28876049</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | [[Category: | + | </div> |
| - | [[Category: | + | <div class="pdbe-citations 5hm4" style="background-color:#fffaf0;"></div> |
| - | [[Category: | + | == References == |
| - | [[Category: Lu | + | <references/> |
| - | [[Category: | + | __TOC__ |
| + | </StructureSection> | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Thermotoga maritima]] | ||
| + | [[Category: Cuneo MJ]] | ||
| + | [[Category: Ghimire-Rijal S]] | ||
| + | [[Category: Lu X]] | ||
| + | [[Category: Myles DAA]] | ||
Current revision
Crystal structure of oligopeptide ABC transporter, periplasmic oligopeptide-binding protein (TM1226) from THERMOTOGA MARITIMA at 2.0 A resolution
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