1fx8

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[[Image:1fx8.gif|left|200px]]
 
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==CRYSTAL STRUCTURE OF THE E. COLI GLYCEROL FACILITATOR (GLPF) WITH SUBSTRATE GLYCEROL==
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The line below this paragraph, containing "STRUCTURE_1fx8", creates the "Structure Box" on the page.
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<StructureSection load='1fx8' size='340' side='right'caption='[[1fx8]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[1fx8]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. The May 2014 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Aquaporin'' by David Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2014_5 10.2210/rcsb_pdb/mom_2014_5]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FX8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1FX8 FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2&#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=BOG:B-OCTYLGLUCOSIDE'>BOG</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr>
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{{STRUCTURE_1fx8| PDB=1fx8 | SCENE= }}
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1fx8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fx8 OCA], [https://pdbe.org/1fx8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1fx8 RCSB], [https://www.ebi.ac.uk/pdbsum/1fx8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1fx8 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/GLPF_ECOLI GLPF_ECOLI] Transporter of glycerol across the cytoplasmic membrane, with limited permeability to water and small uncharged compounds such as polyols.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/fx/1fx8_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=1fx8 ConSurf].
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<div style="clear:both"></div>
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'''CRYSTAL STRUCTURE OF THE E. COLI GLYCEROL FACILITATOR (GLPF) WITH SUBSTRATE GLYCEROL'''
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==See Also==
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*[[Aquaporin 3D structures|Aquaporin 3D structures]]
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*[[Ion channels 3D structures|Ion channels 3D structures]]
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==Overview==
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__TOC__
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Membrane channel proteins of the aquaporin family are highly selective for permeation of specific small molecules, with absolute exclusion of ions and charged solutes and without dissipation of the electrochemical potential across the cell membrane. We report the crystal structure of the Escherichia coli glycerol facilitator (GlpF) with its primary permeant substrate glycerol at 2.2 angstrom resolution. Glycerol molecules line up in an amphipathic channel in single file. In the narrow selectivity filter of the channel the glycerol alkyl backbone is wedged against a hydrophobic corner, and successive hydroxyl groups form hydrogen bonds with a pair of acceptor, and donor atoms. Two conserved aspartic acid-proline-alanine motifs form a key interface between two gene-duplicated segments that each encode three-and-one-half membrane-spanning helices around the channel. This structure elucidates the mechanism of selective permeability for linear carbohydrates and suggests how ions and water are excluded.
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</StructureSection>
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[[Category: Aquaporin]]
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==About this Structure==
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1FX8 is a [[Single protein]] structure of sequence 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=1FX8 OCA].
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==Reference==
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Structure of a glycerol-conducting channel and the basis for its selectivity., Fu D, Libson A, Miercke LJ, Weitzman C, Nollert P, Krucinski J, Stroud RM, Science. 2000 Oct 20;290(5491):481-6. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11039922 11039922]
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[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Fu, D.]]
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[[Category: RCSB PDB Molecule of the Month]]
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[[Category: Libson, A.]]
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[[Category: Fu D]]
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[[Category: Miercke, L J.W.]]
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[[Category: Libson A]]
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[[Category: Nollert, P.]]
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[[Category: Miercke LJW]]
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[[Category: Stroud, R M.]]
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[[Category: Nollert P]]
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[[Category: Weitzman, C.]]
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[[Category: Stroud RM]]
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[[Category: Glycerol-conducting membrane channel protein]]
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[[Category: Weitzman C]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 16:52:14 2008''
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Current revision

CRYSTAL STRUCTURE OF THE E. COLI GLYCEROL FACILITATOR (GLPF) WITH SUBSTRATE GLYCEROL

PDB ID 1fx8

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