isoleucine

American  

[ahy-suh-loo-seen, -sin] / ˌaɪ səˈlu sin, -sɪn /

noun

Biochemistry.

1. a crystalline amino acid, C 6 H 13 O 2 , occurring in proteins, that is essential to the nutrition of humans and animals. Ile; I

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isoleucine British  

/ -sɪn, ˌaɪsəʊˈluːsiːn /

noun

1. an essential amino acid that occurs in proteins and is formed by protein hydrolysis

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isoleucine Scientific  

/ ī′sə-lo̅o̅′sēn′ /

1. An essential amino acid. Chemical formula: C ₆ H ₁₃ NO ₂ .

2. See more at amino acid

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Etymology

Origin of isoleucine

First recorded in 1900–05; iso- + leucine

Compare meaning

How does isoleucine compare to similar and commonly confused words? Explore the most common comparisons:

• isoleucine vs. leucine

Example Sentences

For CRC, key indicators included bacteria like Fusobacterium and Enterococcus, along with metabolites such as isoleucine and nicotinamide.

From Science Daily • Apr. 4, 2026

On the flipside, higher PFOS, related to coronary artery disease, was associated with lower isoleucine and leucine levels.

From Science Daily • Jun. 5, 2024

Higher levels of PFOA, which predicted coronary microvascular disease, were associated with higher levels of amino acids isoleucine and leucine and higher levels of pro-inflammatory cytokines.

From Science Daily • Jun. 5, 2024

Other data from Lamming's lab suggest that overweight and obese Americans may be eating significantly more isoleucine than they need.

From Science Daily • Nov. 22, 2023

They are known as essential amino acids, and in humans they include isoleucine, leucine, and cysteine.

From Textbooks • Jun. 9, 2022