title: Transmembrane receptor DCC associates with protein synthesis machinery and regulates translation.
abstract: Extracellular signals regulate protein translation in many cell functions. A key advantage of control at the translational level is the opportunity to regulate protein synthesis within specific cellular subregions. However, little is known about mechanisms that may link extracellular cues to translation with spatial precision. Here, we show that a transmembrane receptor, DCC, forms a binding complex containing multiple translation components, including eukaryotic initiation factors, ribosomal large and small subunits, and monosomes. In neuronal axons and dendrites DCC colocalizes in particles with translation machinery, and newly synthesized protein. The extracellular ligand netrin promoted DCC-mediated translation and disassociation of translation components. The functional and physical association of a cell surface receptor with the translation machinery leads to a generalizable model for localization and extracellular regulation of protein synthesis, based on a transmembrane translation regulation complex.
authors.affiliation: Department of Cell Biology, Harvard Medical School, 240 Longwood Avenue, Boston, MA 02115, USA.
authors.forename: Joseph
authors.initials: J
authors.lastname: Tcherkezian
authors.forename: Perry A
authors.initials: PA
authors.lastname: Brittis
authors.forename: Franziska
authors.initials: F
authors.lastname: Thomas
authors.forename: Philippe P
authors.initials: PP
authors.lastname: Roux
authors.forename: John G
authors.initials: JG
authors.lastname: Flanagan
mesh_terms: D020816:Amino Acid Motifs; D000818:Animals; D001369:Axons / Q000378:metabolism; D002478:Cells, Cultured; D002642:Chick Embryo; D003712:Dendrites / Q000378:metabolism; D006624:Hippocampus / Q000166:cytology / Q000378:metabolism; D006801:Humans; D051379:Mice; D009414:Nerve Growth Factors / Q000378:metabolism; D000075388:Netrin-1; D009474:Neurons / Q000378:metabolism*; D014176:Protein Biosynthesis; D017434:Protein Structure, Tertiary; D051381:Rats; D011956:Receptors, Cell Surface / Q000737:chemistry / Q000378:metabolism*; D012269:Ribosomal Proteins / Q000378:metabolism*; D012270:Ribosomes / Q000378:metabolism; D025521:Tumor Suppressor Proteins / Q000737:chemistry / Q000378:metabolism*
chemical_list: D009414:Nerve Growth Factors; D011956:Receptors, Cell Surface; D012269:Ribosomal Proteins; D025521:Tumor Suppressor Proteins; C029742:ribosomal protein L5; D000075388:Netrin-1