2016年3月
Determination of cleavage site of Reelin between its sixth and seventh repeat and contribution of meprin metalloproteases to the cleavage.
Journal of Biochemistry
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- 巻
- 159
- 号
- 3
- 開始ページ
- 305
- 終了ページ
- 12
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1093/jb/mvv102
- 出版者・発行元
- OXFORD UNIV PRESS
Reelin is a secreted glycoprotein whose function is regulated by proteolysis. One of the specific cleavage sites of Reelin, called C-t, is located approximately between the sixth and seventh Reelin repeat but its exact site was unknown. We here show that a metalloprotease present in the culture supernatant of cerebellar granular neurons (CGN) cleaves Reelin between Ala2688 and Asp2689. A Reelin mutant in which Asp2689 is replaced by Lys (Reelin-DK) is resistant to C-t cleavage by culture supernatant of CGN. From biochemical characteristics and the cleavage site preference, meprin α and meprin β were suggested candidate proteases and both were confirmed to cleave Reelin at the C-t site. Meprin α cleaved Reelin-DK but meprin β did not. Actinonin, a meprin α and meprin β inhibitor, did not inhibit the Reelin-cleaving activity of CGN and the amount of Reelin fragments in brains of meprin β knock-out mice was not significantly different from that of the wild-type, indicating that meprin β does not play a major role in Reelin cleavage under basal conditions. We propose that meprin α and meprin β join the modulators of Reelin signalling as they cleave Reelin at a specific site and are upregulated under specific pathological conditions.
- リンク情報
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- DOI
- https://doi.org/10.1093/jb/mvv102
- J-GLOBAL
- https://jglobal.jst.go.jp/detail?JGLOBAL_ID=201702215306818946
- PubMed
- https://www.ncbi.nlm.nih.gov/pubmed/26491063
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000372434300004&DestApp=WOS_CPL
- ID情報
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- DOI : 10.1093/jb/mvv102
- ISSN : 0021-924X
- eISSN : 1756-2651
- J-Global ID : 201702215306818946
- PubMed ID : 26491063
- Web of Science ID : WOS:000372434300004