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tubulin

American

[too-byuh-lin, tyoo-] / ˈtu byə lɪn, ˈtyu- /

noun

Biochemistry.

either of two globular proteins that form the structural subunits of microtubules.

Etymology

Origin of tubulin

First recorded in 1965–70; tubule + -in ²

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Researchers also observed unusually high levels of tubulin at cell junctions.

From Science Daily • Dec. 17, 2025

Enzymes called DNA damage response kinases and tubulin acetyltransferase are the master regulators of the process, and promote the formation of the tubules.

From Science Daily • Apr. 17, 2024

Inside cells, tubulin proteins form long, and incredibly thin rods called microtubules.

From Science Daily • Jan. 25, 2024

The drugs bind the tubulin, thereby inhibiting their division in S-phase.

From Textbooks • Jun. 9, 2022

FtsZ proteins can form filaments, rings, and other three-dimensional structures resembling the way tubulin forms microtubules, centrioles, and various cytoskeleton components.

From Textbooks • Apr. 25, 2013

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023