Definition of tubulin in English:

tubulin

noun

Biochemistry
  • [mass noun] A protein that is the main constituent of the microtubules of living cells.

    • ‘In addition to actin, other filamentous systems in cells include tubulin, collagen, and DNA.’
    • ‘We also detected increases in fragments of intracellular structural proteins: tubulin, actin, and myosin.’
    • ‘Linear structures formed by proteins such as actin and tubulin are reversible and highly dynamic.’
    • ‘The basic structural subunit of microtubules is the protein tubulin.’
    • ‘Taxotere works by inhibiting tubulin, a protein essential to cell division, thus preventing cancer cells from dividing and growing in number.’

Origin

1960s: from tubule + -in.

Pronunciation:

tubulin

/ˈtjuːbjʊlɪn/