Display Settings:

Format

Send to:

Choose Destination
    EMBO J. 1991 Sep;10(9):2661-8.

    Xenopus M phase MAP kinase: isolation of its cDNA and activation by MPF.

    Source

    Department of Biophysics and Biochemistry, Faculty of Science, University of Tokyo, Japan.

    Abstract

    MAP kinase is activated and phosphorylated during M phase of the Xenopus oocyte cell cycle, and induces the interphase-M phase transition of microtubule dynamics in vitro. We have carried out molecular cloning of Xenopus M phase MAP kinase and report its entire amino acid sequence. There is no marked change in the MAP kinase mRNA level during the cell cycle. Moreover, studies with an anti-MAP kinase antiserum indicate that MAP kinase activity may be regulated posttranslationally, most likely by phosphorylation. We show that MAP kinase can be activated by microinjection of MPF into immature oocytes or by adding MPF to cell-free extracts of interphase eggs. These results suggest that MAP kinase functions as an intermediate between MPF and the interphase-M phase transition of microtubule organization.

    PMID:
    1714387
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC452967
    Free PMC Article

      Supplemental Content

      Icon for PubMed Central

      Save items

      loading

      Recent activity

      Your browsing activity is empty.

      Activity recording is turned off.

      Turn recording back on

      See more...
      Write to the Help Desk