isoleucine
isoleucine — noun
1. an amino acid that the human body needs to stay healthy but cannot make by itsel
an amino acid that the human body needs to stay healthy but cannot make by itself; it must come from eating protein-rich foods such as meat, fish, eggs, and beans
Dr. Hassan told the young swimmer that isoleucine helps rebuild muscle after a long race.
collocation: isoleucine helps rebuild [tissue]
Feng checked the protein bar and found isoleucine listed third on the amino acid panel.
The hospital dietitian added extra portions of isoleucine-rich food to the recovery ward menu.
Mayumi felt tired and her muscles recovered slowly without enough isoleucine in her diet.
Kian learned that his body broke down isoleucine from the fish he ate for lunch.
用法筆記
Often grouped with leucine and valine under the label 'branched-chain amino acids' or 'BCAAs' in nutrition and sports science.
常見錯誤
2. a solid, water-repelling amino acid whose molecules contain the same number and
a solid, water-repelling amino acid whose molecules contain the same number and type of atoms as leucine but arranged in a different shape, giving it distinct properties
Amelia placed the crystalline isoleucine sample under the microscope for the morning lab session.
collocation: crystalline isoleucine
The exam question asked Haruto to explain why isoleucine and leucine have different properties.
Professor Devika drew the chemical structure of isoleucine on the whiteboard for her students.
Ines shook the glass vial and watched the isoleucine crystals slide across the water without mixing in.
Professor Kim drew a diagram showing isoleucine stays in the protein's centre because it cannot mix with surrounding water.
用法筆記
The 'iso-' prefix indicates that this molecule is a structural isomer of leucine — same atoms, different arrangement. Distinguish from sense 1, which focuses on nutritional role rather than chemical identity.