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We have characterized the UDP-galactose: alpha-N-acetylgalactosaminide beta 3 galactosyltransferase in human tracheal epithelium using asialo ovine submaxillary mucin as the acceptor. Maximal enzyme activity was obtained at pH 6.0-7.5 and at 20-25 mM MnCl2 and at 2% Triton X-100. Cd2+ could substitute for Mn2+ as the divalent ion cofactor. Spermine,(More)
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