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| | <StructureSection load='3fy3' size='340' side='right'caption='[[3fy3]], [[Resolution|resolution]] 1.80Å' scene=''> | | <StructureSection load='3fy3' size='340' side='right'caption='[[3fy3]], [[Resolution|resolution]] 1.80Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3fy3]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_29906 Atcc 29906]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3FY3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3FY3 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3fy3]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Proteus_mirabilis Proteus mirabilis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3FY3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3FY3 FirstGlance]. <br> |
| - | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">hpmA ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=584 ATCC 29906])</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]] 1.8Å</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=3fy3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3fy3 OCA], [https://pdbe.org/3fy3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3fy3 RCSB], [https://www.ebi.ac.uk/pdbsum/3fy3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3fy3 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=3fy3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3fy3 OCA], [https://pdbe.org/3fy3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3fy3 RCSB], [https://www.ebi.ac.uk/pdbsum/3fy3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3fy3 ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/HLYA_PROMI HLYA_PROMI] |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Atcc 29906]] | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Bailey, L J]] | + | [[Category: Proteus mirabilis]] |
| - | [[Category: Hocking, J M]] | + | [[Category: Bailey LJ]] |
| - | [[Category: Howard, D R]] | + | [[Category: Hocking JM]] |
| - | [[Category: Thompson, J R]] | + | [[Category: Howard DR]] |
| - | [[Category: Wawrzyn, G T]] | + | [[Category: Thompson JR]] |
| - | [[Category: Weaver, T M]] | + | [[Category: Wawrzyn GT]] |
| - | [[Category: Beta helix]] | + | [[Category: Weaver TM]] |
| - | [[Category: Cell membrane]]
| + | |
| - | [[Category: Cell outer membrane]]
| + | |
| - | [[Category: Cytolysis]]
| + | |
| - | [[Category: Hemolysin]]
| + | |
| - | [[Category: Hemolysis]]
| + | |
| - | [[Category: Membrane]]
| + | |
| - | [[Category: Solenoid]]
| + | |
| - | [[Category: Toxin]]
| + | |
| - | [[Category: Two partner secretion]]
| + | |
| Structural highlights
Function
HLYA_PROMI
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
In this study we analyzed the structure and function of a truncated form of hemolysin A (HpmA265) from Proteus mirabilis using a series of functional and structural studies. Hemolysin A belongs to the two-partner secretion pathway. The two-partner secretion pathway has been identified as the most common protein secretion pathway among Gram-negative bacteria. Currently, the mechanism of action for the two-partner hemolysin members is not fully understood. In this study, hemolysis experiments revealed a unidirectional, cooperative, biphasic activity profile after full-length, inactive hemolysin A was seeded with truncated hemolysin A. We also solved the first x-ray structure of a TpsA hemolysin. The truncated hemolysin A formed a right-handed parallel beta-helix with three adjoining segments of anti-parallel beta-sheet. A CXXC disulfide bond, four buried solvent molecules, and a carboxyamide ladder were all located at the third complete beta-helix coil. Replacement of the CXXC motif led to decreased activity and stability according to hemolysis and CD studies. Furthermore, the crystal structure revealed a sterically compatible, dry dimeric interface formed via anti-parallel beta-sheet interactions between neighboring beta-helix monomers. Laser scanning confocal microscopy further supported the unidirectional interconversion of full-length hemolysin A. From these results, a model has been proposed, where cooperative, beta-strand interactions between HpmA265 and neighboring full-length hemolysin A molecules, facilitated in part by the highly conserved CXXC pattern, account for the template-assisted hemolysis.
Structural and functional studies of truncated hemolysin A from Proteus mirabilis.,Weaver TM, Hocking JM, Bailey LJ, Wawrzyn GT, Howard DR, Sikkink LA, Ramirez-Alvarado M, Thompson JR J Biol Chem. 2009 Aug 14;284(33):22297-309. Epub 2009 Jun 3. PMID:19494116[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Weaver TM, Hocking JM, Bailey LJ, Wawrzyn GT, Howard DR, Sikkink LA, Ramirez-Alvarado M, Thompson JR. Structural and functional studies of truncated hemolysin A from Proteus mirabilis. J Biol Chem. 2009 Aug 14;284(33):22297-309. Epub 2009 Jun 3. PMID:19494116 doi:10.1074/jbc.M109.014431
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