Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 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\26868013
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Bioenerg+Biomembr
2017 ; 49
(1
): 13-25
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Physiological roles of the mitochondrial permeability transition pore
#MMPMID26868013
Mnatsakanyan N
; Beutner G
; Porter GA
; Alavian KN
; Jonas EA
J Bioenerg Biomembr
2017[Feb]; 49
(1
): 13-25
PMID26868013
show ga
Neurons experience high metabolic demand during such processes as synaptic
vesicle recycling, membrane potential maintenance and Ca(2+) exchange/extrusion.
The energy needs of these events are met in large part by mitochondrial
production of ATP through the process of oxidative phosphorylation. The job of
ATP production by the mitochondria is performed by the F(1)F(O) ATP synthase, a
multi-protein enzyme that contains a membrane-inserted portion, an
extra-membranous enzymatic portion and an extensive regulatory complex. Although
required for ATP production by mitochondria, recent findings have confirmed that
the membrane-confined portion of the c-subunit of the ATP synthase also houses a
large conductance uncoupling channel, the mitochondrial permeability transition
pore (mPTP), the persistent opening of which produces osmotic dysregulation of
the inner mitochondrial membrane, uncoupling of oxidative phosphorylation and
cell death. Recent advances in understanding the molecular components of mPTP and
its regulatory mechanisms have determined that decreased uncoupling occurs in
states of enhanced mitochondrial efficiency; relative closure of mPTP therefore
contributes to cellular functions as diverse as cardiac development and synaptic
efficacy.