FEBS Lett. 1998 Sep 18;435(2-3):225-8.

Intestinal lactase-phlorizin hydrolase (LPH): the two catalytic sites; the role of the pancreas in pro-LPH maturation.

Zecca L, Mesonero JE, Stutz A, Poirée JC, Giudicelli J, Cursio R, Gloor SM, Semenza G.

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Department of Biochemistry, Swiss Federal Institute of Technology, ETH Zentrum, Zurich.

Abstract

Brush border lactase-phlorizin hydrolase carries two catalytic sites. In the human enzyme lactase comprises Glu-1749, phlorizin hydrolase Glu-1273. The proteolytic processing of pro-lactase-phlorizin hydrolase by (rat) enterocytes stops two amino acid residues short of the N-terminus of 'mature' final, brush border lactase-phlorizin hydrolase. Only these two amino acid residues are removed by luminal pancreatic protease(s), probably trypsin.

PMID:: 9762914; [PubMed - indexed for MEDLINE]

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Research Support, Non-U.S. Gov't

MeSH Terms

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Glycosylceramidase

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