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alkaloids definition

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Basic nitrogen compounds (mostly heterocyclic) occurring mostly in the plant kingdom (but not excluding those of animal origin). Amino acids, peptides, proteins, nucleotides, nucleic acids, amino sugars, and antibiotics are not normally regarded as alkaloids. By extension, certain neutral compounds biogenetically related to basic alkaloids are included.


See also:

Alpha (a) Particle definition
aluminized width definition
Alpha() helix definition
air flow interruption definition
aldaric acids definition