Alkaline Phosphatase and Leucine Aminopeptidase Association in Plasma of the Chicken

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Science  26 May 1967:
Vol. 156, Issue 3778, pp. 1106-1107
DOI: 10.1126/science.156.3778.1106


Two electrophoretic vari ants of leucine aminopeptidase show direct association with two genetically controlled forms of alkaline phosphatase. Treatment of plasma with neuraminidase converted the faster-migrating form of both enzymes to slower-moving forms, but plasmas with slowermigrating forms were unaffected by this treatment. The two forms of the enzymes may be due to the presence or absence of a single gene controlling the attachment of sialic acid to the enzyme molecules.