What is XLE amino acid? Decoding the Scientific Symbol
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4 min read
The International Union of Pure and Applied Chemistry (IUPAC) and the International Union of Biochemistry and Molecular Biology (IUBMB) have designated the three-letter symbol *Xle* as a placeholder to represent either the amino acid Leucine or Isoleucine. This symbol serves a specific purpose in scientific analysis when these two structurally similar isomers cannot be precisely distinguished.
