microtubule

American  

[mahy-kroh-too-byool, -tyoo-] / ˌmaɪ kroʊˈtu byul, -ˈtyu- /

noun

Cell Biology.

1. a hollow cylindrical structure in the cytoplasm of most cells, involved in intracellular shape and transport.

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microtubule British  

/ ˌmaɪkrəʊˈtjuːbjuːl /

noun

1. biology a tubular aggregate of protein subunits that forms structures, such as the mitotic spindle or the cilia of animal cells or of protozoans, in which the protein interacts with other proteins to generate various cellular movements

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microtubule Scientific  

/ mī′krō-to̅o̅′byo̅o̅l /

1. Any of the tube-shaped protein structures that help eukaryotic cells maintain their shape and assist in forming the cell spindle during cell division. Microtubules and actin filaments are the main components of the cell's supporting matrix or cytoskeleton.

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Etymology

Origin of microtubule

First recorded in 1960–65; micro- + tubule

Example Sentences

Instead of the engine, CENP-E behaves like a coupling that secures the link between a chromosome and the microtubule.

From Science Daily

Enzymes deposit a chemical mark on a specific part of the microtubule filaments, which causes them to recruit tiny motor proteins and push on the nuclear envelope.

From Science Daily

This is a process called microtubule nucleation, which is like laying the foundation stones of a bridge.

From Science Daily

In the nervous system, microtubule networks work both as structures connecting nerve cells and as a means for the nervous system to transmit chemical signals that produce sensation.

From Science Daily

For decades, researchers have believed that a class of drugs called microtubule poisons treat cancerous tumors by halting mitosis, or the division of cells.

From Science Daily