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Amino Acid Groups definitions

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  • Amino Acid
    Organic molecule with a central carbon, amino group, carboxyl group, hydrogen, and unique R group; building block of proteins.
  • R Group
    Variable side chain attached to the central carbon in amino acids, determining chemical properties and group classification.
  • Alpha Carbon
    Central atom in amino acids bonded to hydrogen, amino group, carboxyl group, and R group; core of amino acid structure.
  • Dipolar Ion
    Molecule with both positive and negative charges at physiological pH, as seen in amino acid backbones.
  • Physiological pH
    pH value around 7, typical of biological systems, where amino acids exist as dipolar ions.
  • Amino Group
    Functional group with a positive charge at physiological pH, attached to the alpha carbon in amino acids.
  • Carboxyl Group
    Functional group with a negative charge at physiological pH, attached to the alpha carbon in amino acids.
  • Functional Grouping
    Classification system based on the biological function or behavior of amino acid R groups.
  • Structural Grouping
    Classification system based on the arrangement and presence of atoms in amino acid R groups.
  • Non-Polar Amino Acid
    Type of amino acid with R groups lacking polarity, grouped by functional properties.
  • Polar Amino Acid
    Type of amino acid with R groups exhibiting polarity, grouped by functional properties.
  • Charged Amino Acid
    Type of amino acid with R groups carrying a net positive or negative charge at physiological pH.
  • Aromatic Amino Acid
    Type of amino acid with R groups containing aromatic rings, grouped by structural characteristics.
  • Abbreviation
    Shortened form, either three-letter or one-letter, used to represent individual amino acids.
  • Protein
    Macromolecule composed of amino acid chains, essential for biological structure and function.