Cytosolic carboxypeptidase 5 removes α- And γ-linked glutamates from tubulin

Iryna Berezniuk, Peter J. Lyons, Juan J. Sironi, Hui Xiao, Mitsutoshi Setou, Ruth H. Angeletti, Koji Ikegami, Lloyd D. Fricker

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


Background: Cytosolic carboxypeptidase 5 (CCP5) was proposed to selectively cleave γ-linked glutamate from tubulin side chains, but not α-linked glutamates. Results: Purified CCP5 removes α- and γ-linked glutamates from microtubules, soluble tubulin, and synthetic peptides. Conclusion: CCP5 is not specific for γ-linked glutamate or for a specific form of tubulin. Significance: CCP5 is an important tubulin code-modifying enzyme.

Original languageEnglish (US)
Pages (from-to)30445-30453
Number of pages9
JournalJournal of Biological Chemistry
Issue number42
StatePublished - Oct 18 2013

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Cell Biology


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