An essential role for α4A-tubulin in platelet biogenesis.
Catherine Strassel, Maria M Magiera, Arnaud Dupuis, Morgane Batzenschlager, Agnès Hovasse, Irina Pleines, Paul Guéguen, Anita Eckly, Sylvie Moog, Léa Mallo, Quentin Kimmerlin, Stéphane Chappaz, Jean-Marc Strub, Natarajan Kathiresan, Henri de la Salle, Alain Van Dorsselaer, Claude Ferec, Jean-Yves Py, Christian Gachet, Christine Schaeffer-Reiss Show all
Life Science Alliance | Published : 2019
During platelet biogenesis, microtubules (MTs) are arranged into submembranous structures (the marginal band) that encircle the cell in a single plane. This unique MT array has no equivalent in any other mammalian cell, and the mechanisms responsible for this particular mode of assembly are not fully understood. One possibility is that platelet MTs are composed of a particular set of tubulin isotypes that carry specific posttranslational modifications. Although β1-tubulin is known to be essential, no equivalent roles of α-tubulin isotypes in platelet formation or function have so far been reported. Here, we identify α4A-tubulin as a predominant α-tubulin isotype in platelets. Similar to β1-t..View full abstract