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Chymotrypsin definitions

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  • Chymotrypsin
    A digestive peptidase secreted by the pancreas, favoring cleavage at aromatic amino acid residues on the C-terminal end of proteins.
  • Peptidase
    An enzyme class responsible for catalyzing the breakdown of proteins into smaller peptides or amino acids.
  • Pancreas
    An organ that releases digestive enzymes, including chymotrypsin, into the small intestine following a meal.
  • Aromatic Amino Acid
    A group of amino acids, such as phenylalanine, tyrosine, and tryptophan, recognized and cleaved preferentially by chymotrypsin.
  • Phenylalanine
    An aromatic amino acid residue frequently targeted by chymotrypsin for peptide bond cleavage.
  • Tyrosine
    An aromatic amino acid residue that serves as a preferred cleavage site for chymotrypsin.
  • Tryptophan
    An aromatic amino acid residue selectively recognized by chymotrypsin during protein digestion.
  • C-terminal End
    The end of a protein or peptide where chymotrypsin cleaves, releasing fragments for further digestion.
  • Zymogen
    An inactive precursor form of an enzyme, such as chymotrypsinogen, requiring activation for function.
  • Chymotrypsinogen
    The inactive zymogen form of chymotrypsin, secreted by the pancreas and activated by cleavage.
  • Active Site
    A region within chymotrypsin containing the catalytic triad, responsible for substrate binding and catalysis.
  • Catalytic Triad
    A trio of amino acid residues—Aspartate, Histidine, and Serine—essential for chymotrypsin's catalytic activity.
  • Aspartate
    A member of the catalytic triad, crucial for positioning histidine to enhance serine's nucleophilicity.
  • Histidine
    A catalytic triad residue that forms hydrogen bonds, acting as a base to facilitate serine's nucleophilic strength.
  • Serine
    A catalytic triad residue whose nucleophilicity is increased by neighboring interactions, enabling peptide bond cleavage.