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| | <StructureSection load='2c5d' size='340' side='right'caption='[[2c5d]], [[Resolution|resolution]] 3.30Å' scene=''> | | <StructureSection load='2c5d' size='340' side='right'caption='[[2c5d]], [[Resolution|resolution]] 3.30Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2c5d]] is a 4 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=2C5D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2C5D FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2c5d]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2C5D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2C5D FirstGlance]. <br> |
| - | </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>, <scene name='pdbligand=NI:NICKEL+(II)+ION'>NI</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</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]] 3.3Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1h30|1h30]]</div></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>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=NI:NICKEL+(II)+ION'>NI</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Transferase Transferase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.10.1 and 2.7.10.2 2.7.10.1 and 2.7.10.2] </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=2c5d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2c5d OCA], [https://pdbe.org/2c5d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2c5d RCSB], [https://www.ebi.ac.uk/pdbsum/2c5d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2c5d 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=2c5d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2c5d OCA], [https://pdbe.org/2c5d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2c5d RCSB], [https://www.ebi.ac.uk/pdbsum/2c5d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2c5d ProSAT]</span></td></tr> |
| | </table> | | </table> |
| - | == Disease == | |
| - | [[https://www.uniprot.org/uniprot/UFO_HUMAN UFO_HUMAN]] Note=AXL and its ligand GAS6 are highly expressed in thyroid carcinoma tissues, and might thus be involved in thyroid tumorigenesis. Overexpression of AXL and its ligand was also detected in many other cancers such as myeloproliferative disorders, prostatic carcinoma cells, or breast cancer. | |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/UFO_HUMAN UFO_HUMAN]] Receptor tyrosine kinase that transduces signals from the extracellular matrix into the cytoplasm by binding growth factor GAS6 and which is thus regulating many physiological processes including cell survival, cell proliferation, migration and differentiation. Ligand binding at the cell surface induces dimerization and autophosphorylation of AXL. Following activation by ligand, ALX binds and induces tyrosine phosphorylation of PI3-kinase subunits PIK3R1, PIK3R2 and PIK3R3; but also GRB2, PLCG1, LCK and PTPN11. Other downstream substrate candidates for AXL are CBL, NCK2, SOCS1 and TENC1. Recruitment of GRB2 and phosphatidylinositol 3 kinase regulatory subunits by AXL leads to the downstream activation of the AKT kinase. GAS6/AXL signaling plays a role in various processes such as endothelial cell survival during acidification by preventing apoptosis, optimal cytokine signaling during human natural killer cell development, hepatic regeneration, gonadotropin-releasing hormone neuron survival and migration, platelet activation, or regulation of thrombotic responses. Plays also an important role in inhibition of Toll-like receptors (TLRs)-mediated innate immune response. In case of filovirus infection, seems to function as a cell entry factor.<ref>PMID:1656220</ref> <ref>PMID:10403904</ref> <ref>PMID:11484958</ref> <ref>PMID:12364394</ref> <ref>PMID:12490074</ref> <ref>PMID:15507525</ref> <ref>PMID:15733062</ref> <ref>PMID:17005688</ref> <ref>PMID:18840707</ref>
| + | [https://www.uniprot.org/uniprot/GAS6_HUMAN GAS6_HUMAN] Ligand for tyrosine-protein kinase receptors AXL, TYRO3 and MER whose signaling is implicated in cell growth and survival, cell adhesion and cell migration. GAS6/AXL signaling plays a role in various processes such as endothelial cell survival during acidification by preventing apoptosis, optimal cytokine signaling during human natural killer cell development, hepatic regeneration, gonadotropin-releasing hormone neuron survival and migration, platelet activation, or regulation of thrombotic responses.<ref>PMID:12364394</ref> <ref>PMID:18840707</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: Transferase]]
| + | [[Category: Cheburkin Y]] |
| - | [[Category: Cheburkin, Y]] | + | [[Category: Clout NJ]] |
| - | [[Category: Clout, N J]] | + | [[Category: Goehring W]] |
| - | [[Category: Goehring, W]] | + | [[Category: Hohenester E]] |
| - | [[Category: Hohenester, E]] | + | [[Category: Knyazev PG]] |
| - | [[Category: Knyazev, P G]] | + | [[Category: Sasaki T]] |
| - | [[Category: Sasaki, T]] | + | [[Category: Timpl R]] |
| - | [[Category: Timpl, R]] | + | [[Category: Ullrich A]] |
| - | [[Category: Ullrich, A]] | + | |
| - | [[Category: Egf-like domain]]
| + | |
| - | [[Category: Growth regulation]]
| + | |
| - | [[Category: Growth regulation-complex]]
| + | |
| - | [[Category: Immunoglobulin-like domain]]
| + | |
| - | [[Category: Laminin g-like domain]]
| + | |
| - | [[Category: Receptor]]
| + | |
| - | [[Category: Receptor tyrosine kinase]]
| + | |
| - | [[Category: Signaling protein-receptor complex]]
| + | |
| - | [[Category: Signaling protein/receptor]]
| + | |
| - | [[Category: Vitamin k-dependent protein]]
| + | |
| Structural highlights
Function
GAS6_HUMAN Ligand for tyrosine-protein kinase receptors AXL, TYRO3 and MER whose signaling is implicated in cell growth and survival, cell adhesion and cell migration. GAS6/AXL signaling plays a role in various processes such as endothelial cell survival during acidification by preventing apoptosis, optimal cytokine signaling during human natural killer cell development, hepatic regeneration, gonadotropin-releasing hormone neuron survival and migration, platelet activation, or regulation of thrombotic responses.[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
Receptor tyrosine kinases of the Axl family are activated by the vitamin K-dependent protein Gas6. Axl signalling plays important roles in cancer, spermatogenesis, immunity, and platelet function. The crystal structure at 3.3 A resolution of a minimal human Gas6/Axl complex reveals an assembly of 2:2 stoichiometry, in which the two immunoglobulin-like domains of the Axl ectodomain are crosslinked by the first laminin G-like domain of Gas6, with no direct Axl/Axl or Gas6/Gas6 contacts. There are two distinct Gas6/Axl contacts of very different size, both featuring interactions between edge beta-strands. Structure-based mutagenesis, protein binding assays and receptor activation experiments demonstrate that both the major and minor Gas6 binding sites are required for productive transmembrane signalling. Gas6-mediated Axl dimerisation is likely to occur in two steps, with a high-affinity 1:1 Gas6/Axl complex forming first. Only the minor Gas6 binding site is highly conserved in the other Axl family receptors, Sky/Tyro3 and Mer. Specificity at the major contact is suggested to result from the segregation of charged and apolar residues to opposite faces of the newly formed beta-sheet.
Structural basis for Gas6-Axl signalling.,Sasaki T, Knyazev PG, Clout NJ, Cheburkin Y, Gohring W, Ullrich A, Timpl R, Hohenester E EMBO J. 2006 Jan 11;25(1):80-7. Epub 2005 Dec 15. PMID:16362042[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ D'Arcangelo D, Gaetano C, Capogrossi MC. Acidification prevents endothelial cell apoptosis by Axl activation. Circ Res. 2002 Oct 4;91(7):e4-12. PMID:12364394
- ↑ Park IK, Giovenzana C, Hughes TL, Yu J, Trotta R, Caligiuri MA. The Axl/Gas6 pathway is required for optimal cytokine signaling during human natural killer cell development. Blood. 2009 Mar 12;113(11):2470-7. doi: 10.1182/blood-2008-05-157073. Epub 2008, Oct 7. PMID:18840707 doi:10.1182/blood-2008-05-157073
- ↑ Sasaki T, Knyazev PG, Clout NJ, Cheburkin Y, Gohring W, Ullrich A, Timpl R, Hohenester E. Structural basis for Gas6-Axl signalling. EMBO J. 2006 Jan 11;25(1):80-7. Epub 2005 Dec 15. PMID:16362042
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