21. This enzyme participates in valine, leucine and isoleucine degradation and valine, leucine and isoleucine biosynthesis. 22. This enzyme participates in valine, leucine and isoleucine degradation and valine, leucine and isoleucine biosynthesis. 23. This results in translation of a methionine instead of an isoleucine at the I / M site. 24. Interestingly, the unique aminoacyltRNA synthetase encoded by Cafeteria roenbergensis virus corresponds to the one for isoleucine . 25. Without adequate biotin, the human body will be unable to fully break down isoleucine and leucine molecules. 26. Along with leucine and isoleucine , valine is a hydrophobic, the hemoglobin is prone to abnormal aggregation. 27. The aspartate family of amino acids includes : threonine, lysine, methionine, isoleucine , and aspartate. 28. This animation loops through all the rotamers of the isoleucine amino acid based on the Penultimate Rotamer Library. 29. In this mutation, a mismatch in the DNA replication causes isoleucine to be made instead of lysine. 30. Bromination of aspergillic acid followed by HBr yields a mixture of DL-leucine and DL-isoleucine .