Deprecated: Implicit conversion from float 215.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 215.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 215.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 215.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 215.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 215.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 215.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 249.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 249.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 249.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\25947375
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Biol+Chem
2015 ; 290
(24
): 15004-17
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Phospholipid Flippase ATP10A Translocates Phosphatidylcholine and Is Involved in
Plasma Membrane Dynamics
#MMPMID25947375
Naito T
; Takatsu H
; Miyano R
; Takada N
; Nakayama K
; Shin HW
J Biol Chem
2015[Jun]; 290
(24
): 15004-17
PMID25947375
show ga
We showed previously that ATP11A and ATP11C have flippase activity toward
aminophospholipids (phosphatidylserine (PS) and phosphatidylethanolamine (PE))
and ATP8B1 and that ATP8B2 have flippase activity toward phosphatidylcholine (PC)
(Takatsu, H., Tanaka, G., Segawa, K., Suzuki, J., Nagata, S., Nakayama, K., and
Shin, H. W. (2014) J. Biol. Chem. 289, 33543-33556). Here, we show that the
localization of class 5 P4-ATPases to the plasma membrane (ATP10A and ATP10D) and
late endosomes (ATP10B) requires an interaction with CDC50A. Moreover, exogenous
expression of ATP10A, but not its ATPase-deficient mutant ATP10A(E203Q),
dramatically increased PC flipping but not flipping of PS or PE. Depletion of
CDC50A caused ATP10A to be retained at the endoplasmic reticulum instead of being
delivered to the plasma membrane and abrogated the increased PC flipping activity
observed by expression of ATP10A. These results demonstrate that ATP10A is
delivered to the plasma membrane via its interaction with CDC50A and,
specifically, flips PC at the plasma membrane. Importantly, expression of ATP10A,
but not ATP10A(E203Q), dramatically altered the cell shape and decreased cell
size. In addition, expression of ATP10A, but not ATP10A(E203Q), delayed cell
adhesion and cell spreading onto the extracellular matrix. These results suggest
that enhanced PC flipping activity due to exogenous ATP10A expression alters the
lipid composition at the plasma membrane, which may in turn cause a delay in cell
spreading and a change in cell morphology.