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Amino Acid Configuration definitions

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  • Chirality
    Property of molecules with non-superimposable mirror images, crucial for distinguishing amino acid types in biochemistry.
  • Fischer Projection
    Two-dimensional representation used to depict the spatial arrangement of atoms in amino acids, aiding configuration identification.
  • L Amino Acid
    Type favored in protein synthesis, characterized by specific spatial arrangement and predominance in living organisms.
  • D Amino Acid
    Less common variant, occasionally found in bacterial cell walls, with distinct spatial configuration from its counterpart.
  • S Configuration
    Arrangement of groups around a chiral center, typically associated with most L amino acids except for a notable exception.
  • R Configuration
    Spatial arrangement found in L cysteine due to unique priority assignment of its side chain, differing from other L amino acids.
  • Glycine
    Unique amino acid lacking chirality, serving as the sole achiral member among alpha amino acids.
  • Cysteine
    Amino acid with a sulfur-containing side chain, notable for its R configuration among L amino acids.
  • Carboxyl Group
    Functional group positioned at the top in standard Fischer projections, essential for amino acid identification.
  • Amino Group
    Functional group placed on the left in standard Fischer projections, key for distinguishing L amino acids.
  • Alpha Carbon
    Central atom in amino acids, bonded to four distinct groups, determining chirality and configuration.
  • R Group
    Variable side chain attached to the alpha carbon, influencing priority and configuration in amino acids.
  • Priority Assignment
    Systematic ranking of groups around a chiral center, critical for determining molecular configuration.
  • Wedge
    Graphical element in projections indicating a group protruding toward the viewer, affecting configuration interpretation.
  • Dash
    Graphical element in projections showing a group receding away from the viewer, used in recognizing amino acid representations.