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| | <StructureSection load='3e0n' size='340' side='right'caption='[[3e0n]], [[Resolution|resolution]] 1.70Å' scene=''> | | <StructureSection load='3e0n' size='340' side='right'caption='[[3e0n]], [[Resolution|resolution]] 1.70Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3e0n]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3E0N OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3E0N FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3e0n]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3E0N OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3E0N FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ARM:DEOXY-METHYL-ARGININE'>ARM</scene>, <scene name='pdbligand=DPN:D-PHENYLALANINE'>DPN</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=PHE:PHENYLALANINE'>PHE</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ARM:DEOXY-METHYL-ARGININE'>ARM</scene>, <scene name='pdbligand=DPN:D-PHENYLALANINE'>DPN</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[3e0p|3e0p]], [[3e16|3e16]], [[3e1x|3e1x]]</div></td></tr>
| + | |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PRSS8 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=3e0n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3e0n OCA], [https://pdbe.org/3e0n PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3e0n RCSB], [https://www.ebi.ac.uk/pdbsum/3e0n PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3e0n 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=3e0n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3e0n OCA], [https://pdbe.org/3e0n PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3e0n RCSB], [https://www.ebi.ac.uk/pdbsum/3e0n PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3e0n ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/PRSS8_HUMAN PRSS8_HUMAN]] Possesses a trypsin-like cleavage specificity with a preference for poly-basic substrates. Stimulates epithelial sodium channel (ENaC) activity through activating cleavage of the gamma subunits (SCNN1G).<ref>PMID:15246975</ref> <ref>PMID:15474520</ref>
| + | [https://www.uniprot.org/uniprot/PRSS8_HUMAN PRSS8_HUMAN] Possesses a trypsin-like cleavage specificity with a preference for poly-basic substrates. Stimulates epithelial sodium channel (ENaC) activity through activating cleavage of the gamma subunits (SCNN1G).<ref>PMID:15246975</ref> <ref>PMID:15474520</ref> |
| | == 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: Human]] | + | [[Category: Homo sapiens]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Harris, J L]] | + | [[Category: Synthetic construct]] |
| - | [[Category: Hornsby, M]] | + | [[Category: Harris JL]] |
| - | [[Category: Lesley, S A]] | + | [[Category: Hornsby M]] |
| - | [[Category: Shipway, A]] | + | [[Category: Lesley SA]] |
| - | [[Category: Spraggon, G]] | + | [[Category: Shipway A]] |
| - | [[Category: Cell membrane]]
| + | [[Category: Spraggon G]] |
| - | [[Category: Channel]]
| + | |
| - | [[Category: Chloromethyl-ketone]]
| + | |
| - | [[Category: Enac]]
| + | |
| - | [[Category: Glycoprotein]]
| + | |
| - | [[Category: Hydrolase]]
| + | |
| - | [[Category: Membrane]]
| + | |
| - | [[Category: Prostasin]]
| + | |
| - | [[Category: Protease]]
| + | |
| - | [[Category: Secreted]]
| + | |
| - | [[Category: Serine protease]]
| + | |
| - | [[Category: Transmembrane]]
| + | |
| - | [[Category: Zymogen]]
| + | |
| Structural highlights
Function
PRSS8_HUMAN Possesses a trypsin-like cleavage specificity with a preference for poly-basic substrates. Stimulates epithelial sodium channel (ENaC) activity through activating cleavage of the gamma subunits (SCNN1G).[1] [2]
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
Prostasin or human channel-activating protease 1 has been reported to play a critical role in the regulation of extracellular sodium ion transport via its activation of the epithelial cell sodium channel. Here, the structure of the extracellular portion of the membrane associated serine protease has been solved to high resolution in complex with a nonselective d-FFR chloromethyl ketone inhibitor, in an apo form, in a form where the apo crystal has been soaked with the covalent inhibitor camostat and in complex with the protein inhibitor aprotinin. It was also crystallized in the presence of the divalent cation Ca(+2). Comparison of the structures with each other and with other members of the trypsin-like serine protease family reveals unique structural features of prostasin and a large degree of conformational variation within specificity determining loops. Of particular interest is the S1 subsite loop which opens and closes in response to basic residues or divalent ions, directly binding Ca(+2) cations. This induced fit active site provides a new possible mode of regulation of trypsin-like proteases adapted in particular to extracellular regions with variable ionic concentrations such as the outer membrane layer of the epithelial cell.
Active site conformational changes of prostasin provide a new mechanism of protease regulation by divalent cations.,Spraggon G, Hornsby M, Shipway A, Tully DC, Bursulaya B, Danahay H, Harris JL, Lesley SA Protein Sci. 2009 May;18(5):1081-94. PMID:19388054[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Tong Z, Illek B, Bhagwandin VJ, Verghese GM, Caughey GH. Prostasin, a membrane-anchored serine peptidase, regulates sodium currents in JME/CF15 cells, a cystic fibrosis airway epithelial cell line. Am J Physiol Lung Cell Mol Physiol. 2004 Nov;287(5):L928-35. Epub 2004 Jul 9. PMID:15246975 doi:http://dx.doi.org/10.1152/ajplung.00160.2004
- ↑ Shipway A, Danahay H, Williams JA, Tully DC, Backes BJ, Harris JL. Biochemical characterization of prostasin, a channel activating protease. Biochem Biophys Res Commun. 2004 Nov 12;324(2):953-63. PMID:15474520 doi:http://dx.doi.org/10.1016/j.bbrc.2004.09.123
- ↑ Spraggon G, Hornsby M, Shipway A, Tully DC, Bursulaya B, Danahay H, Harris JL, Lesley SA. Active site conformational changes of prostasin provide a new mechanism of protease regulation by divalent cations. Protein Sci. 2009 May;18(5):1081-94. PMID:19388054 doi:10.1002/pro.118
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