Vasohibins encode tubulin detyrosinating activity

Joppe Nieuwenhuis, Athanassios Adamopoulos, Onno B Bleijerveld, Abdelghani Mazouzi, Elmer Stickel, Patrick Celie, Maarten Altelaar, Puck Knipscheer, Anastassis Perrakis, Vincent A Blomen, Thijn R Brummelkamp

Research output: Contribution to journal/periodicalArticleScientificpeer-review

Abstract

Tubulin is subjected to a number of posttranslational modifications to generate heterogeneous microtubules. The modifications include removal and ligation of the C-terminal tyrosine of ⍺-tubulin. The enzymes responsible for detyrosination, an activity first observed 40 years ago, have remained elusive. We applied a genetic screen in haploid human cells to find regulators of tubulin detyrosination. We identified SVBP, a peptide that regulates the abundance of vasohibins (VASH1 and VASH2). Vasohibins, but not SVBP alone, increased detyrosination of ⍺-tubulin, and purified vasohibins removed the C-terminal tyrosine of ⍺-tubulin. We found that vasohibins play a cell type-dependent role in detyrosination, although cells also contain an additional detyrosinating activity. Thus, vasohibins, hitherto studied as secreted angiogenesis regulators, constitute a long-sought missing link in the tubulin tyrosination cycle.

Original languageEnglish
Pages (from-to)1453-1456
Number of pages4
JournalScience
Volume358
Issue number6369
DOIs
Publication statusPublished - 15 Dec 2017

Keywords

  • Journal Article
  • Research Support, Non-U.S. Gov't

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