3fxx

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Revision as of 06:52, 1 November 2017

Human EphA3 Kinase and Juxtamembrane Region Bound to Substrate KQWDNYE[pTyr]IW

Structural highlights

3fxx is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
NonStd Res:
Related:	3fy2, 2gsf, 2qoc, 1ir3
Gene:	EPHA3, ETK, ETK1, HEK, TYRO4 (HUMAN)
Activity:	Receptor protein-tyrosine kinase, with EC number 2.7.10.1
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[EPHA3_HUMAN] Defects in EPHA3 may be a cause of colorectal cancer (CRC) [MIM:114500].

Function

[EPHA3_HUMAN] Receptor tyrosine kinase which binds promiscuously membrane-bound ephrin family ligands residing on adjacent cells, leading to contact-dependent bidirectional signaling into neighboring cells. The signaling pathway downstream of the receptor is referred to as forward signaling while the signaling pathway downstream of the ephrin ligand is referred to as reverse signaling. Highly promiscuous for ephrin-A ligands it binds preferentially EFNA5. Upon activation by EFNA5 regulates cell-cell adhesion, cytoskeletal organization and cell migration. Plays a role in cardiac cells migration and differentiation and regulates the formation of the atrioventricular canal and septum during development probably through activation by EFNA1. Involved in the retinotectal mapping of neurons. May also control the segregation but not the guidance of motor and sensory axons during neuromuscular circuit development.^[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

Ephrin receptor tyrosine kinase A3 (EphA3, EC 2.7.10.1) is a member of a unique branch of the kinome in which downstream signaling occurs in both ligand- and receptor-expressing cells. Consequently, the ephrins and ephrin receptor tyrosine kinases often mediate processes involving cell-cell contact, including cellular adhesion or repulsion, developmental remodeling and neuronal mapping. The receptor is also frequently overexpressed in invasive cancers, including breast, small-cell lung and gastrointestinal cancers. However, little is known about direct substrates of EphA3 kinase and no chemical probes are available. Using a library approach, we found a short peptide sequence that is a good substrate for EphA3 and is suitable for co-crystallization studies. Complex structures show multiple contacts between kinase and substrates; in particular, two residues undergo conformational changes and by mutation are found to be important for substrate binding and turnover. In addition, a difference in catalytic efficiency between EPH kinase family members is observed. These results provide insight into the mechanism of substrate binding to these developmentally integral enzymes.

Structural recognition of an optimized substrate for the ephrin family of receptor tyrosine kinases.,Davis TL, Walker JR, Allali-Hassani A, Parker SA, Turk BE, Dhe-Paganon S FEBS J. 2009 Aug;276(16):4395-404. PMID:19678838^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Lawrenson ID, Wimmer-Kleikamp SH, Lock P, Schoenwaelder SM, Down M, Boyd AW, Alewood PF, Lackmann M. Ephrin-A5 induces rounding, blebbing and de-adhesion of EphA3-expressing 293T and melanoma cells by CrkII and Rho-mediated signalling. J Cell Sci. 2002 Mar 1;115(Pt 5):1059-72. PMID:11870224
↑ Davis TL, Walker JR, Allali-Hassani A, Parker SA, Turk BE, Dhe-Paganon S. Structural recognition of an optimized substrate for the ephrin family of receptor tyrosine kinases. FEBS J. 2009 Aug;276(16):4395-404. PMID:19678838 doi:http://dx.doi.org/10.1111/j.1742-4658.2009.07147.x

1 Structural highlights
2 Disease
3 Function
4 Evolutionary Conservation
5 Publication Abstract from PubMed
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3fxx"

@@ Line 1: / Line 1: @@
 ==Human EphA3 Kinase and Juxtamembrane Region Bound to Substrate KQWDNYE[pTyr]IW==
 <StructureSection load='3fxx' size='340' side='right' caption='[[3fxx]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
@@ Line 8: / Line 9: @@
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">EPHA3, ETK, ETK1, HEK, TYRO4 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Receptor_protein-tyrosine_kinase Receptor protein-tyrosine kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.10.1 2.7.10.1] </span></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=3fxx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3fxx OCA], [http://pdbe.org/3fxx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3fxx RCSB], [http://www.ebi.ac.uk/pdbsum/3fxx PDBsum]</span></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=3fxx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3fxx OCA], [http://pdbe.org/3fxx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3fxx RCSB], [http://www.ebi.ac.uk/pdbsum/3fxx PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3fxx ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 33: / Line 34: @@
 </div>
 <div class="pdbe-citations 3fxx" style="background-color:#fffaf0;"></div>
-==See Also==
-*[[Ephrin receptor|Ephrin receptor]]
 == References ==
 <references/>

3fxx

From Proteopedia

Revision as of 06:52, 1 November 2017

Human EphA3 Kinase and Juxtamembrane Region Bound to Substrate KQWDNYE[pTyr]IW

Structural highlights

Disease

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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