Structure and activity of JAC1 j-domain implicate the involvement of the cochaperone activity with Hsc70 in chloroplast photorelocation movement

Noriyuki Suetsugu, Akira Takano, Daisuke Kohda, Masamitsu Wada

    研究成果: Contribution to journalArticle

    2 被引用数 (Scopus)

    抄録

    Chloroplast photorelocation movement towards weak light and away from strong light is essential for plants to adapt to the fluctuation of ambient light conditions. In the previous study, we showed that blue light receptor phototropins mediated blue light-induced chloroplast movement in Arabidopsis by regulating short actin filaments localized at the chloroplast periphery (cp-actin filaments) rather than actin cables in the cytoplasm. However, the signaling pathway for the chloroplast photorelocation movement is still unclear. We also identified JAC1 (J-domain protein required for chloroplast accumulation response 1) as an essential component for the accumulation response and dark positioning in Arabidopsis. We recently determined the crystal structure of the J-domain of JAC1. The JAC1 J-domain has a positively charged surface, which forms a putative interface with the Hsc70 chaperone by analogy to that of bovine auxilin. Furthermore, the mutation of the highly conserved HPD motif in the JAC1 J-domain impaired the in vivo activity of JAC1. These data suggest that JAC1 cochaperone activity with HSC70 is essential for chloroplast photorelocation movement.

    元の言語英語
    ジャーナルPlant Signaling and Behavior
    5
    発行部数12
    DOI
    出版物ステータス出版済み - 12 2010

    All Science Journal Classification (ASJC) codes

    • Plant Science

    フィンガープリント 「Structure and activity of JAC1 j-domain implicate the involvement of the cochaperone activity with Hsc70 in chloroplast photorelocation movement」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

    引用スタイル