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Abstract
AbstractKorvusalo, M. and J. Pispa. Biotinidase activity in animal tissues. Acta physiol. scand. 1963. 58. 13—19. — Biotinidase activity of human serum and rat, guinea pig and rabbit serum, liver and intestine was determined using biocytin as substrate. The biotinidase activities of human serum and rat serum and tissues were of the same magnitude, in guinea pig serum the activity was about 10 per cent and in rabbit serum only 1 per cent of the activity in human and rat sera. Similar although less marked differences were found in the biotinidase activity of rat, guinea pig and rabbit tissues. The biotinidase activity of human and rat sera was inhibited by p‐chloromercuribenzoate, arsenite and monoiodoacetate; it was slightly stimulated by glutathione. Ethy‐lenediamine tetraacetate and cyanide had no effect. In zone electrotrophoresis the human serum biotinidase activity had slightly smaller mobility at pH 8.6 than albumin, and moved as a single peak.
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