PMID: 2094803Nov 1, 1990Paper

Furin is a subtilisin-like proprotein processing enzyme in higher eukaryotes

Molecular Biology Reports
W J Van de VenR J Siezen

Abstract

The human fur gene encodes a protein, designated furin, the C-terminal half of which contains a transmembrane and a cysteine-rich receptor-like domain. The N-terminal half of furin exhibits striking primary amino acid sequence similarity to the catalytic domains of members of the subtilisin family of serine proteases. We here report characteristics of the furin protein and propose a three-dimensional model for its presumptive catalytic domain with characteristics, that predict furin to exhibit an endoproteolytic cleavage selectivity at paired basic residues. This prediction is substantiated by transfection and cotransfection experiments, using COS-1 cells. Full length fur cDNA evokes the specific synthesis of two polypeptides of about 100 kDa and 90 kDa as appeared from Western blot analysis of transfected COS-1 cells using a polyclonal anti-furin antiserum. Functional analysis of furin was performed by cotransfection of fur cDNA with cDNA encoding the 'wild type' precursor of von Willebrand factor (pro-vWF) and revealed an increased proteolytic processing of provWF. In contrast, cotransfection of fur cDNA with a recombinant derivative (provWFgly763), having the arginine residue adjacent to the proteolytic cleavage site (arg-se...Continue Reading

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Citations

Aug 1, 1994·Protein Science : a Publication of the Protein Society·D J MatthewsJ A Wells
Mar 1, 1997·Protein Science : a Publication of the Protein Society·R J Siezen, J A Leunissen
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