|
|
| (One intermediate revision not shown.) |
| Line 1: |
Line 1: |
| | | | |
| | ==Structure of OmpF co-crystallized with T83== | | ==Structure of OmpF co-crystallized with T83== |
| - | <StructureSection load='2zld' size='340' side='right' caption='[[2zld]], [[Resolution|resolution]] 3.00Å' scene=''> | + | <StructureSection load='2zld' size='340' side='right'caption='[[2zld]], [[Resolution|resolution]] 3.00Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2zld]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2ZLD OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ZLD FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2zld]] 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=2ZLD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2ZLD FirstGlance]. <br> |
| - | </td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=UNK:UNKNOWN'>UNK</scene></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]] 3Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2zfg|2zfg]]</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=2zld FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2zld OCA], [https://pdbe.org/2zld PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2zld RCSB], [https://www.ebi.ac.uk/pdbsum/2zld PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2zld ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ompF, cmlB, coa, cry, tolF, b0929, JW0912 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 "Bacillus coli" Migula 1895])</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=2zld FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2zld OCA], [http://pdbe.org/2zld PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2zld RCSB], [http://www.ebi.ac.uk/pdbsum/2zld PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2zld ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/OMPF_ECOLI OMPF_ECOLI]] Forms pores that allow passive diffusion of small molecules across the outer membrane. It is also a receptor for the bacteriophage T2.<ref>PMID:19721064</ref> | + | [https://www.uniprot.org/uniprot/OMPF_ECOLI OMPF_ECOLI] Forms pores that allow passive diffusion of small molecules across the outer membrane. It is also a receptor for the bacteriophage T2.<ref>PMID:19721064</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
| Line 32: |
Line 30: |
| | | | |
| | ==See Also== | | ==See Also== |
| - | *[[Colicin|Colicin]] | + | *[[Colicin 3D structures|Colicin 3D structures]] |
| - | *[[Porin|Porin]] | + | *[[Porin 3D structures|Porin 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Bacillus coli migula 1895]] | + | [[Category: Escherichia coli]] |
| - | [[Category: Cramer, W A]] | + | [[Category: Large Structures]] |
| - | [[Category: Yamashita, E]] | + | [[Category: Cramer WA]] |
| - | [[Category: Zakharov, S D]] | + | [[Category: Yamashita E]] |
| - | [[Category: Btub]] | + | [[Category: Zakharov SD]] |
| - | [[Category: Colicin e3]]
| + | |
| - | [[Category: Disordered t83]]
| + | |
| - | [[Category: Ion transport]]
| + | |
| - | [[Category: Membrane]]
| + | |
| - | [[Category: Membrane protein]]
| + | |
| - | [[Category: Outer membrane]]
| + | |
| - | [[Category: Phage recognition]]
| + | |
| - | [[Category: Porin]]
| + | |
| - | [[Category: Ribosomal rnaase]]
| + | |
| - | [[Category: Tol system]]
| + | |
| - | [[Category: Transmembrane]]
| + | |
| - | [[Category: Transport]]
| + | |
| Structural highlights
Function
OMPF_ECOLI Forms pores that allow passive diffusion of small molecules across the outer membrane. It is also a receptor for the bacteriophage T2.[1]
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
The OmpF porin in the Escherichia coli outer membrane (OM) is required for the cytotoxic action of group A colicins, which are proposed to insert their translocation and active domains through OmpF pores. A crystal structure was sought of OmpF with an inserted colicin segment. A 1.6 A OmpF structure, obtained from crystals formed in 1 M Mg2+, has one Mg2+ bound in the selectivity filter between Asp113 and Glu117 of loop 3. Co-crystallization of OmpF with the unfolded 83 residue glycine-rich N-terminal segment of colicin E3 (T83) that occludes OmpF ion channels yielded a 3.0 A structure with inserted T83, which was obtained without Mg2+ as was T83 binding to OmpF. The incremental electron density could be modelled as an extended poly-glycine peptide of at least seven residues. It overlapped the Mg2+ binding site obtained without T83, explaining the absence of peptide binding in the presence of Mg2+. Involvement of OmpF in colicin passage through the OM was further documented by immuno-extraction of an OM complex, the colicin translocon, consisting of colicin E3, BtuB and OmpF.
Crystal structures of the OmpF porin: function in a colicin translocon.,Yamashita E, Zhalnina MV, Zakharov SD, Sharma O, Cramer WA EMBO J. 2008 Aug 6;27(15):2171-80. Epub 2008 Jul 17. PMID:18636093[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Duval V, Nicoloff H, Levy SB. Combined inactivation of lon and ycgE decreases multidrug susceptibility by reducing the amount of OmpF porin in Escherichia coli. Antimicrob Agents Chemother. 2009 Nov;53(11):4944-8. doi: 10.1128/AAC.00787-09., Epub 2009 Aug 31. PMID:19721064 doi:10.1128/AAC.00787-09
- ↑ Yamashita E, Zhalnina MV, Zakharov SD, Sharma O, Cramer WA. Crystal structures of the OmpF porin: function in a colicin translocon. EMBO J. 2008 Aug 6;27(15):2171-80. Epub 2008 Jul 17. PMID:18636093 doi:10.1038/emboj.2008.137
|
