Biological and Pharmaceutical Bulletin
Online ISSN : 1347-5215
Print ISSN : 0918-6158
ISSN-L : 0918-6158
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Re-evaluation of Protease Activity of Reelin
Takao KohnoMitsuharu Hattori
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JOURNAL FREE ACCESS

2010 Volume 33 Issue 6 Pages 1047-1049

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Abstract

Reelin is a very large secreted glycoprotein that is essential for brain formation and function, but the mechanism by which it affects the dynamics and morphology of neuronal cells remains unsolved. One previous study claimed that Reelin has a proteolytic activity against extracellular matrix proteins, which might explain many of the actions of Reelin. Therefore, in this study wild-type Reelin protein and its mutant in which a supposedly critical serine residue was replaced were expressed and tested for their self-degrading and laminin-degrading activities. We found that both of these proteins generated totally the same cleaved fragments and that neither of them is capable of degrading laminin. It is thus likely that Reelin is not a serine protease and is unable to degrade extracellular matrix.

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© 2010 The Pharmaceutical Society of Japan
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