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Altering Primary Protein Structure definitions

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  • Primary Protein Structure
    Linear arrangement of amino acid residues from the N-terminal to the C-terminal, determining protein identity and function.
  • Amino Acid Composition
    The specific types and numbers of amino acids present in a protein chain, influencing its properties.
  • Amino Acid Sequence
    The precise order in which amino acids are linked in a protein, critical for its shape and activity.
  • N-terminal
    The starting end of a protein chain, characterized by a free amino group, marking the sequence's beginning.
  • C-terminal
    The ending end of a protein chain, characterized by a free carboxyl group, marking the sequence's conclusion.
  • Amino Acid Substitution
    Replacement of one amino acid with another in a protein, potentially altering structure and function.
  • Non-polar Amino Acid
    Amino acids with hydrophobic side chains, often grouped together and minimally affecting protein function when interchanged.
  • Aspartic Acid
    A negatively charged, acidic amino acid that can significantly impact protein properties if substituted.
  • Glutamic Acid
    A negatively charged, acidic amino acid, whose substitution can alter protein shape and function.
  • Histidine
    A positively charged amino acid, often involved in protein active sites and sensitive to substitution.
  • Isoleucine
    A non-polar amino acid, similar to valine, whose substitution is less likely to disrupt protein structure.
  • Valine
    A non-polar amino acid, often used as an example for minimal impact substitutions in protein chains.
  • Methionine
    An amino acid frequently found at the start of protein sequences, contributing to primary structure.
  • Phenylalanine
    A non-polar amino acid with an aromatic side chain, sensitive to substitution effects.
  • Glycine
    A small, non-polar amino acid, whose removal or substitution can alter protein structure.