TTCP hydrolyzes the terminal L-Tyr residue from alpha-tubulin

Stable Identifier
Reaction [transition]
Homo sapiens
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TTCP (tubulinyl-tyrosine carboxypeptidase) hydrolyzes the terminal L-Tyr residue from the alpha-tubulin subunit of an alpha tubulin:beta tubulin dimer to yield delY-alpha tubulin and L-tyrosine (L-Tyr). Although TTCP enzyme has not been purified from any species, studies of material partially purified from chicken brain have allowed its activity to be defined and distinguished from those of widely expressed carboxypeptidases with broader substrate specificities (Argarana et al. 1980). This reaction is known to occur in humans (Song & Brody 2015; Yu et al. 2015) and its properties have been inferred from those of its chicken counterpart.

Literature References
PubMed ID Title Journal Year
25468068 Post-translational modifications of tubulin: pathways to functional diversity of microtubules

Song, Y, Brady, ST

Trends Cell Biol. 2015
25957412 Writing and Reading the Tubulin Code

Yu, I, Garnham, CP, Roll-Mecak, A

J. Biol. Chem. 2015
7452228 Tubulinyl-tyrosine carboxypeptidase from chicken brain: properties and partial purification

Argarana, CE, Barra, HS, Caputto, R

J. Neurochem. 1980
Participant Of
Event Information
Catalyst Activity
Catalyst Activity
metallocarboxypeptidase activity of TTCP [cytosol]
Physical Entity
Inferred From