isoleucine

American

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

noun

Biochemistry.

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

isoleucine British

/ -sɪn, ˌaɪsəʊˈluːsiːn /

noun

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

isoleucine Scientific

/ ī′sə-lo̅o̅′sēn′ /

An essential amino acid. Chemical formula: C ₆ H ₁₃ NO ₂ .
See more at amino acid

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

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

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

While the results are promising, humans do need isoleucine to live.

From Science Daily • Nov. 22, 2023

And winnowing a significant amount of isoleucine out of a diet that hasn't been preformulated by a mouse chow company is not an easy task.

From Science Daily • Nov. 22, 2023

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

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