tubulin

noun

tu·​bu·​lin ˈtü-byə-lən 

ˈtyü-

: a globular protein that polymerizes to form microtubules

Examples of tubulin in a Sentence

Recent Examples on the Web

The big surprise is that most are tubulin genes, which form some of the structural components of cells. — Quanta Magazine, 13 July 2026

Proteomic analysis found 601 proteins in FOOD, including those involved in cell structure and adhesion (actin, tubulin, vinculin, and integrins). — New Atlas, 16 Oct. 2025

The drug binds to the protein tubulin in cells, preventing it from forming into microtubules, which are vital structural components of cells. — Beth Mole, Ars Technica, 27 Oct. 2023

Along with another protein called tubulin, tau binds to these microtubules to keep them strong and stabilized. — Amber Jorgenson, Discover Magazine, 17 Oct. 2019

Word History

Etymology

tubule + -in entry 1

First Known Use

1968, in the meaning defined above

Medical Definition

tubulin

noun

tu·​bu·​lin ˈt(y)ü-byə-lən 

: a globular protein that polymerizes to form microtubules