|
KMID : 0385520130260010106
|
|
Analytical Science & Technology
2013 Volume.26 No. 1 p.106 ~ p.112
|
|
|
Identification of N-terminal amino acids of ApPDE4 involved in targeting to plasma membrane and cellular morphological change by expression of N-terminal peptide
|
|
Kim Kun-Hyung
Jun Yong-Woo
Jang Deok-Jin
Lee Jin-A
|
|
|
Abstract
|
|
|
PDE plays an important role in cAMP-mediated cellular signaling within the cells. The proper targeting of each PDE is mediated by unique N-terminal of each PDE isoform. It has been recently reported that supershort-, short- and long-forms of PDE4 in Aplysia were cloned in Aplysia. Long-form of ApPDE4 was localized at plasma membrane and presynaptic terminal in Aplysia sensory neurons. However, it remains elusive which part of ApPDE4 is minimal region for the proper targeting and what are the effects on the cell functions. Here, we identified that N-terminal 13 amino acids of ApPDE4 long-form is minimal regions for the plasma membrane targeting. In addition, overexpression of ApPDE4(N20)-mRFP could induce morphological changes in HEK293T cells. Interestingly, mRFP-PLCδ1(PH), which selectively binds to PI4,5P2, could induce morphological changes in similar with that by ApPDE4(N20)-mRFP. These results suggested that binding of
ApPDE4(N20) to lipids including PI4,5P2 might be responsible for targeting of ApPDE4 to plasma membrane and morphological changes in HEK293T cells.
|
|
|
KEYWORD
|
|
|
PDE4, membrane targeting, PI4, 5P2
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|