4gt5
From Proteopedia
(Difference between revisions)
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- | + | ==Crystal structure of the inactive TrkA kinase domain== | |
- | === | + | <StructureSection load='4gt5' size='340' side='right' caption='[[4gt5]], [[Resolution|resolution]] 2.40Å' scene=''> |
- | + | == Structural highlights == | |
+ | <table><tr><td colspan='2'>[[4gt5]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4GT5 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4GT5 FirstGlance]. <br> | ||
+ | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4gt4|4gt4]]</td></tr> | ||
+ | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">MTC, NTRK1, TRK, TRKA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</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=4gt5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4gt5 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4gt5 RCSB], [http://www.ebi.ac.uk/pdbsum/4gt5 PDBsum]</span></td></tr> | ||
+ | </table> | ||
+ | == Disease == | ||
+ | [[http://www.uniprot.org/uniprot/NTRK1_HUMAN NTRK1_HUMAN]] Defects in NTRK1 are a cause of congenital insensitivity to pain with anhidrosis (CIPA) [MIM:[http://omim.org/entry/256800 256800]]. CIPA is characterized by a congenital insensitivity to pain, anhidrosis (absence of sweating), absence of reaction to noxious stimuli, self-mutilating behavior, and mental retardation. This rare autosomal recessive disorder is also known as congenital sensory neuropathy with anhidrosis or hereditary sensory and autonomic neuropathy type IV or familial dysautonomia type II.<ref>PMID:8696348</ref> <ref>PMID:10090906</ref> <ref>PMID:10330344</ref> <ref>PMID:10233776</ref> <ref>PMID:10861667</ref> <ref>PMID:10982191</ref> <ref>PMID:10567924</ref> <ref>PMID:11310631</ref> <ref>PMID:11159935</ref> <ref>PMID:22302274</ref> Defects in NTRK1 are a cause of thyroid papillary carcinoma (TPC) [MIM:[http://omim.org/entry/188550 188550]]. TPC is a common tumor of the thyroid that typically arises as an irregular, solid or cystic mass from otherwise normal thyroid tissue. Papillary carcinomas are malignant neoplasm characterized by the formation of numerous, irregular, finger-like projections of fibrous stroma that is covered with a surface layer of neoplastic epithelial cells. Note=Chromosomal aberrations involving NTRK1 are found in thyroid papillary carcinomas. Translocation t(1;3)(q21;q11) with TFG generates the TRKT3 (TRK-T3) transcript by fusing TFG to the 3'-end of NTRK1; a rearrangement with TPM3 generates the TRK transcript by fusing TPM3 to the 3'-end of NTRK1; an intrachromosomal rearrangement that links the protein kinase domain of NTRK1 to the 5'-end of the TPR gene forms the fusion protein TRK-T1. TRK-T1 is a 55 kDa protein reacting with antibodies against the C-terminus of the NTRK1 protein. | ||
+ | == Function == | ||
+ | [[http://www.uniprot.org/uniprot/NTRK1_HUMAN NTRK1_HUMAN]] Receptor tyrosine kinase involved in the development and the maturation of the central and peripheral nervous systems through regulation of proliferation, differentiation and survival of sympathetic and nervous neurons. High affinity receptor for NGF which is its primary ligand, it can also bind and be activated by NTF3/neurotrophin-3. However, NTF3 only supports axonal extension through NTRK1 but has no effect on neuron survival. Upon dimeric NGF ligand-binding, undergoes homodimerization, autophosphorylation and activation. Recruits, phosphorylates and/or activates several downstream effectors including SHC1, FRS2, SH2B1, SH2B2 and PLCG1 that regulate distinct overlapping signaling cascades driving cell survival and differentiation. Through SHC1 and FRS2 activates a GRB2-Ras-MAPK cascade that regulates cell differentiation and survival. Through PLCG1 controls NF-Kappa-B activation and the transcription of genes involved in cell survival. Through SHC1 and SH2B1 controls a Ras-PI3 kinase-AKT1 signaling cascade that is also regulating survival. In absence of ligand and activation, may promote cell death, making the survival of neurons dependent on trophic factors.<ref>PMID:1850821</ref> <ref>PMID:1849459</ref> <ref>PMID:8325889</ref> <ref>PMID:8155326</ref> <ref>PMID:11244088</ref> <ref>PMID:15488758</ref> Isoform TrkA-III is resistant to NGF, constitutively activates AKT1 and NF-kappa-B and is unable to activate the Ras-MAPK signaling cascade. Antagonizes the anti-proliferative NGF-NTRK1 signaling that promotes neuronal precursors differentiation. Isoform TrkA-III promotes angiogenesis and has oncogenic activity when overexpressed.<ref>PMID:1850821</ref> <ref>PMID:1849459</ref> <ref>PMID:8325889</ref> <ref>PMID:8155326</ref> <ref>PMID:11244088</ref> <ref>PMID:15488758</ref> | ||
+ | <div style="background-color:#fffaf0;"> | ||
+ | == Publication Abstract from PubMed == | ||
+ | To investigate the range of autoinhibitory mechanisms used by tyrosine kinase domains (TKDs) from the insulin receptor family of receptor tyrosine kinases, we determined crystal structures of TKDs from TrkA (nerve growth factor receptor) and Ror2 (an unconventional Wnt receptor). TrkA autoinhibition closely resembles that seen for insulin receptor, relying on projection of an activation loop tyrosine into the substrate binding site and occlusion of the ATP binding site by the activation loop. Ror2 employs similar mechanisms, but the unusual replacement of the phenylalanine in its Asp-Phe-Gly motif with leucine necessitates occlusion of the ATP-binding site by other means. The unusual Asp-Leu-Gly motif in Ror2 is displaced compared with other inactive kinases, allowing the activation loop to interact directly with the TKDs alphaC helix, in another mode of autoinhibition that is characteristic of the other extreme of this receptor family ALK and Met. These findings provide insight into the expected range of activating mutations in these TKDs in cancer. We also describe a symmetric dimer of the inactive TrkA TKD resembling that found in other receptor tyrosine kinases - possibly reflecting an arrangement of kinase domains in a pre-formed TrkA dimer. | ||
- | + | Assessing the range of kinase autoinhibition mechanisms in the insulin receptor family.,Artim SC, Mendrola JM, Lemmon MA Biochem J. 2012 Sep 20. PMID:22992069<ref>PMID:22992069</ref> | |
- | + | ||
- | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
- | + | </div> | |
- | + | == References == | |
- | == | + | <references/> |
- | + | __TOC__ | |
- | + | </StructureSection> | |
- | + | ||
- | <references | + | |
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Receptor protein-tyrosine kinase]] | [[Category: Receptor protein-tyrosine kinase]] | ||
- | [[Category: Artim, S C | + | [[Category: Artim, S C]] |
- | [[Category: Lemmon, M A | + | [[Category: Lemmon, M A]] |
[[Category: Transferase]] | [[Category: Transferase]] | ||
[[Category: Tyrosine kinase domain]] | [[Category: Tyrosine kinase domain]] |
Revision as of 11:24, 21 December 2014
Crystal structure of the inactive TrkA kinase domain
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