Table of Contents
To view the fulltext, log-in or choose pay-per-view options:
Get Access

Sequential Expression, Activity and Nuclear Localization of Prolyl Oligopeptidase Protein in the Developing Rat Brain

Hannula M.J. · Männistö P.T. · Myöhänen T.T.
Division of Pharmacology and Toxicology, University of Helsinki, Helsinki, Finland Dev Neurosci 2011;33:38–47 (DOI:10.1159/000322082)


Prolyl oligopeptidase (POP) is a serine protease that hydrolyzes peptides shorter than 30-mer. Some evidence has recently been obtained that POP can generate protein-protein interactions and therefore participate in various physiological and pathological events. Several studies have reported that POP may be involved in neurogenesis since its activity increases during development and can be found in the nucleus of proliferating tissues. In cell cultures, POP has been shown to be localized in the nucleus, but only early in the development, since during maturation it is moved to the cytosol. We have now studied for the first time the expression of POP protein, its enzymatic activity and nuclear localization in vivo in the developing rat brain. We observed that enzymatic activity of POP is highest on embryonic day 18 while the protein amounts reach their peak at birth. Furthermore, POP is located in the nucleus only early in the development but is transferred to the cytosol already before parturition. Our in vivo results confirm the previous cell culture results supporting the role of POP in neurogenesis. A discordance of antenatal protein amounts and enzymatic activities is suggesting a tight regulation of POP activity and possibly even a nonhydrolytic role at that stage.


Individual Users: Register with Karger Login Information

Please create your User ID & Password

Contact Information

I have read the Karger Terms and Conditions and agree.

Pay-per-View Options
Direct payment This item at the regular price: USD 9.00
Payment from account With a Karger Pay-per-View account (down payment USD 150) you profit from a special rate for this and other single items.
This item at the discounted price: USD 8.00