This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

2jxb

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 01:30, 12 September 2015

Structure of CD3epsilon-Nck2 first SH3 domain complex

Structural highlights

2jxb is a 1 chain structure with sequence from Homo sapiens. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Gene:	CD3E, NCK2 (Homo sapiens)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[NCK2_HUMAN] Adapter protein which associates with tyrosine-phosphorylated growth factor receptors or their cellular substrates. Maintains low levels of EIF2S1 phosphorylation by promoting its dephosphorylation by PP1. Plays a role in ELK1-dependent transcriptional activation in response to activated Ras signaling.^[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

Recruitment of signaling molecules to the cytoplasmic domains of the CD3 subunits of the T-cell receptor (TCR) is crucial for early T-cell activation. These transient associations either do or do not require tyrosine phosphorylation of CD3 immune tyrosine activation motifs (ITAMs). Here we show that the non-ITAM-requiring adaptor protein Nck forms a complex with an atypical PxxDY motif of the CD3epsilon tail, which encompasses Tyr166 within the ITAM and a TCR endocytosis signal. As suggested by the structure of the complex, we find that Nck binding inhibits phosphorylation of the CD3epsilon ITAM by Fyn and Lck kinases in vitro. Moreover, the CD3epsilon-Nck interaction downregulates TCR surface expression upon physiological stimulation in mouse primary lymph node cells. This indicates that Nck performs an important regulatory function in T lymphocytes by inhibiting ITAM phosphorylation and/or removing cell surface TCR via CD3epsilon interaction.

Structural and functional evidence that Nck interaction with CD3epsilon regulates T-cell receptor activity.,Takeuchi K, Yang H, Ng E, Park SY, Sun ZY, Reinherz EL, Wagner G J Mol Biol. 2008 Jul 18;380(4):704-16. Epub 2008 May 22. PMID:18555270^[3]

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

References

↑ Braverman LE, Quilliam LA. Identification of Grb4/Nckbeta, a src homology 2 and 3 domain-containing adapter protein having similar binding and biological properties to Nck. J Biol Chem. 1999 Feb 26;274(9):5542-9. PMID:10026169
↑ Latreille M, Larose L. Nck in a complex containing the catalytic subunit of protein phosphatase 1 regulates eukaryotic initiation factor 2alpha signaling and cell survival to endoplasmic reticulum stress. J Biol Chem. 2006 Sep 8;281(36):26633-44. Epub 2006 Jul 11. PMID:16835242 doi:http://dx.doi.org/M513556200
↑ Takeuchi K, Yang H, Ng E, Park SY, Sun ZY, Reinherz EL, Wagner G. Structural and functional evidence that Nck interaction with CD3epsilon regulates T-cell receptor activity. J Mol Biol. 2008 Jul 18;380(4):704-16. Epub 2008 May 22. PMID:18555270 doi:10.1016/j.jmb.2008.05.037

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2jxb"

@@ Line 4: / Line 4: @@
 <table><tr><td colspan='2'>[[2jxb]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JXB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2JXB FirstGlance]. <br>
 </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CD3E, NCK2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</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=2jxb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2jxb OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2jxb RCSB], [http://www.ebi.ac.uk/pdbsum/2jxb 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=2jxb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2jxb OCA], [http://pdbe.org/2jxb PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2jxb RCSB], [http://www.ebi.ac.uk/pdbsum/2jxb PDBsum]</span></td></tr>
 </table>
 == Function ==
@@ Line 26: / Line 26: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 2jxb" style="background-color:#fffaf0;"></div>
 ==See Also==

2jxb

From Proteopedia

Revision as of 01:30, 12 September 2015

Structure of CD3epsilon-Nck2 first SH3 domain complex

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox