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1: Biochem Biophys Res Commun. 1991 Jan 31;174(2):995-1002.Click here to read Links

Purification and partial sequence analysis of the soluble catechol-O-methyltransferase from human placenta: comparison to the rat liver enzyme.

Tilgmann C, Kalkkinen N.

Institute of Biotechnology, University of Helsinki, Finland.

Catechol-o-methyltransferase from human placenta was purified 1400-fold by hydroxyapatite adsorption, ammonium sulfate precipitation, gel filtration, high performance anion- exchange and reversed-phase chromatography. The purified enzyme has an apparent molecular weight of 26.000, an isoelectric point of 5,3 and is activated ten-fold in the presence of 20mM cysteine. The enzyme shows primary structure homology to the corresponding rat liver soluble enzyme, based on the sequenced tryptic peptides.

PMID: 1993083 [PubMed - indexed for MEDLINE]