1yvh: Difference between revisions

No edit summary
No edit summary
 
(11 intermediate revisions by the same user not shown)
Line 1: Line 1:
{{Seed}}
[[Image:1yvh.png|left|200px]]


<!--
==Crystal Structure of the c-Cbl TKB Domain in Complex with the APS pTyr-618 Phosphopeptide==
The line below this paragraph, containing "STRUCTURE_1yvh", creates the "Structure Box" on the page.
<StructureSection load='1yvh' size='340' side='right'caption='[[1yvh]], [[Resolution|resolution]] 2.05&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[1yvh]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1YVH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1YVH FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.05&#8491;</td></tr>
-->
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PTR:O-PHOSPHOTYROSINE'>PTR</scene></td></tr>
{{STRUCTURE_1yvh|  PDB=1yvh  |  SCENE=  }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1yvh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1yvh OCA], [https://pdbe.org/1yvh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1yvh RCSB], [https://www.ebi.ac.uk/pdbsum/1yvh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1yvh ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/CBL_HUMAN CBL_HUMAN] Defects in CBL are the cause of Noonan syndrome-like disorder with or without juvenile myelomonocytic leukemia (NSLL) [MIM:[https://omim.org/entry/613563 613563]. A syndrome characterized by a phenotype reminiscent of Noonan syndrome. Clinical features are highly variable, including facial dysmorphism, short neck, developmental delay, hyperextensible joints and thorax abnormalities with widely spaced nipples. The facial features consist of triangular face with hypertelorism, large low-set ears, ptosis, and flat nasal bridge. Some patients manifest cardiac defects.<ref>PMID:20619386</ref>
== Function ==
[https://www.uniprot.org/uniprot/CBL_HUMAN CBL_HUMAN] Adapter protein that functions as a negative regulator of many signaling pathways that are triggered by activation of cell surface receptors. Acts as an E3 ubiquitin-protein ligase, which accepts ubiquitin from specific E2 ubiquitin-conjugating enzymes, and then transfers it to substrates promoting their degradation by the proteasome. Recognizes activated receptor tyrosine kinases, including KIT, FLT1, FGFR1, FGFR2, PDGFRA, PDGFRB, EGFR, CSF1R, EPHA8 and KDR and terminates signaling. Recognizes membrane-bound HCK and other kinases of the SRC family and mediates their ubiquitination and degradation. Participates in signal transduction in hematopoietic cells. Plays an important role in the regulation of osteoblast differentiation and apoptosis. Essential for osteoclastic bone resorption. The Tyr-731 phosphorylated form induces the activation and recruitment of phosphatidylinositol 3-kinase to the cell membrane in a signaling pathway that is critical for osteoclast function.<ref>PMID:10514377</ref> <ref>PMID:11896602</ref> <ref>PMID:14739300</ref> <ref>PMID:15190072</ref> <ref>PMID:17509076</ref> <ref>PMID:18374639</ref> <ref>PMID:19689429</ref> <ref>PMID:21596750</ref>
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/yv/1yvh_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1yvh ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The Cbl adapter proteins typically function to down-regulate activated protein tyrosine kinases and other signaling proteins by coupling them to the ubiquitination machinery for degradation by the proteasome. Cbl proteins bind to specific tyrosine-phosphorylated sequences in target proteins via the tyrosine kinase-binding (TKB) domain, which comprises a four-helix bundle, an EF-hand calcium-binding domain, and a non-conventional Src homology-2 domain. The previously derived consensus sequence for phosphotyrosine recognition by the Cbl TKB domain is NXpY(S/T)XXP (X denotes lesser residue preference), wherein specificity is conferred primarily by residues C-terminal to the phosphotyrosine. Cbl is recruited to and phosphorylated by the insulin receptor in adipose cells through the adapter protein APS. APS is phosphorylated by the insulin receptor on a C-terminal tyrosine residue, which then serves as a binding site for the Cbl TKB domain. Using x-ray crystallography, site-directed mutagenesis, and calorimetric studies, we have characterized the interaction between the Cbl TKB domain and the Cbl recruitment site in APS, which contains a sequence motif, RA(V/I)XNQpY(S/T), that is conserved in the related adapter proteins SH2-B and Lnk. These studies reveal a novel mode of phosphopeptide interaction with the Cbl TKB domain, in which N-terminal residues distal to the phosphotyrosine directly contact residues of the four-helix bundle of the TKB domain.


===Crystal Structure of the c-Cbl TKB Domain in Complex with the APS pTyr-618 Phosphopeptide===
Structural characterization of a novel Cbl phosphotyrosine recognition motif in the APS family of adapter proteins.,Hu J, Hubbard SR J Biol Chem. 2005 May 13;280(19):18943-9. Epub 2005 Feb 28. PMID:15737992<ref>PMID:15737992</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1yvh" style="background-color:#fffaf0;"></div>


<!--
==See Also==
The line below this paragraph, {{ABSTRACT_PUBMED_15737992}}, adds the Publication Abstract to the page
*[[Ubiquitin protein ligase 3D structures|Ubiquitin protein ligase 3D structures]]
(as it appears on PubMed at http://www.pubmed.gov), where 15737992 is the PubMed ID number.
== References ==
-->
<references/>
{{ABSTRACT_PUBMED_15737992}}
__TOC__
 
</StructureSection>
==About this Structure==
1YVH is a [[Protein complex]] structure of sequences 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=1YVH OCA].
 
==Reference==
Structural characterization of a novel Cbl phosphotyrosine recognition motif in the APS family of adapter proteins., Hu J, Hubbard SR, J Biol Chem. 2005 May 13;280(19):18943-9. Epub 2005 Feb 28. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15737992 15737992]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Protein complex]]
[[Category: Large Structures]]
[[Category: Hu, J.]]
[[Category: Rattus norvegicus]]
[[Category: Hubbard, S R.]]
[[Category: Hu J]]
[[Category: Adapter protein]]
[[Category: Hubbard SR]]
[[Category: Phosphotyrosine]]
[[Category: X-ray crystallography]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 13:20:09 2008''

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA