1a38

<table><tr><td colspan='2'>[[1a38]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Bovin Bovin]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A38 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1A38 FirstGlance]. <br>

</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=1a38 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a38 OCA], [https://pdbe.org/1a38 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1a38 RCSB], [https://www.ebi.ac.uk/pdbsum/1a38 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1a38 ProSAT]</span></td></tr>

[[https://www.uniprot.org/uniprot/1433Z_BOVIN 1433Z_BOVIN]] Adapter protein implicated in the regulation of a large spectrum of both general and specialized signaling pathways. Binds to a large number of partners, usually by recognition of a phosphoserine or phosphothreonine motif. Binding generally results in the modulation of the activity of the binding partner. Activates the ADP-ribosyltransferase (exoS) activity of bacterial origin.<ref>PMID:7931346</ref>

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== Publication Abstract from PubMed ==

14-3-3 proteins bind a variety of molecules involved in signal transduction, cell cycle regulation and apoptosis. 14-3-3 binds ligands such as Raf-1 kinase and Bad by recognizing the phosphorylated consensus motif, RSXpSXP, but must bind unphosphorylated ligands, such as glycoprotein Ib and Pseudomonas aeruginosa exoenzyme S, via a different motif. Here we report the crystal structures of the zeta isoform of 14-3-3 in complex with two peptide ligands: a Raf-derived phosphopeptide (pS-Raf-259, LSQRQRSTpSTPNVHMV) and an unphosphorylated peptide derived from phage display (R18, PHCVPRDLSWLDLEANMCLP) that inhibits binding of exoenzyme S and Raf-1. The two peptides bind within a conserved amphipathic groove on the surface of 14-3-3 at overlapping but distinct sites. The phosphoserine of pS-Raf-259 engages a cluster of basic residues (Lys49, Arg56, Arg60, and Arg127), whereas R18 binds via the amphipathic sequence, WLDLE, with its two acidic groups coordinating the same basic cluster. 14-3-3 is dimeric, and its two peptide-binding grooves are arranged in an antiparallel fashion, 30 A apart. The ability of each groove to bind different peptide motifs suggests how 14-3-3 can act in signal transduction by inducing either homodimer or heterodimer formation in its target proteins.

14-3-3zeta binds a phosphorylated Raf peptide and an unphosphorylated peptide via its conserved amphipathic groove.,Petosa C, Masters SC, Bankston LA, Pohl J, Wang B, Fu H, Liddington RC J Biol Chem. 1998 Jun 26;273(26):16305-10. PMID:9632691<ref>PMID:9632691</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 1a38" style="background-color:#fffaf0;"></div>

[[Category: Bovin]]

[[Category: Fu, H]]

[[Category: Liddington, R C]]

[[Category: Masters, S C]]

[[Category: Petosa, C]]

[[Category: Pohl, J]]

[[Category: Wang, B]]

[[Category: Signal transduction]]