Abstract
The isoelectric points (pI) of aromatic-L-amino-acid decarboxylase (AADC) from two species, rat and cow, were determined by chromatofocusing. The enzyme from both rat brain and adrenal has a pI of 5.5, while the bovine adrenal enzyme has a different pI of 5.0. Thus, the variation of isoelectric point for AADC is limited to species differences but not tissue differences.
Publication types
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Adrenal Glands / enzymology*
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Animals
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Aromatic-L-Amino-Acid Decarboxylases / isolation & purification
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Aromatic-L-Amino-Acid Decarboxylases / metabolism*
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Brain / enzymology*
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Cattle
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Isoelectric Focusing
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Isoenzymes / isolation & purification
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Isoenzymes / metabolism*
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Rats
Substances
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Isoenzymes
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Aromatic-L-Amino-Acid Decarboxylases