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The mitochondrial permeability transition pore (mPTP or MPTP; also referred to as PTP, mTP or MTP) is a protein that is formed in the inner membrane of the mitochondria under certain pathological conditions such as traumatic brain injury and stroke.
VDACs can also oligomerize to form part of the mitochondrial permeability transition pore (MPTP) and, thus, facilitate cytochrome C release, leading to apoptosis. VDACs have also been observed to interact with pro- or antiapoptotic proteins, such as Bcl-2 family proteins and kinases, and so may contribute to apoptosis independently from the MPTP.
During apoptosis, VDAC modifies the mitochondrial permeability transition pore to release of apoptogenic factors such as cytochrome c. However, VDAC are not essential components of the mitochondrial permeability transition pore. Although cytochrome c plays an essential role in oxidative phosphorylation within the mitochondrion.
Examples of mitochondrial transport proteins include the following: The mitochondrial permeability transition pore, which opens in response to increased mitochondrial calcium (Ca 2+) load and oxidative stress [45] The mitochondrial calcium uniporter which transports calcium from the cytosol of the cell into the mitochondrial matrix [45] [46]
Apart from exchange of ADP and ATP across the inner mitochondrial membrane, the ANT also exhibits an intrinsic uncoupling activity [1] [17] ANT is an important modulatory [18] and possible structural component of the Mitochondrial Permeability Transition Pore, a channel involved in various pathologies whose function still remains elusive. Karch ...
Another damaging result of excess calcium in the cytosol is the opening of the mitochondrial permeability transition pore, a pore in the membranes of mitochondria that opens when the organelles absorb too much calcium. Opening of the pore may cause mitochondria to swell and release reactive oxygen species and other proteins that can lead to ...
PPIF is a major component of the mitochondrial permeability transition pore (MPTP) and, thus, highly involved in mitochondrial metabolism and apoptosis, as well as in mitochondrial diseases and related conditions, including cardiac diseases, neurodegenerative diseases, and muscular dystrophy. [7]
The pore size is reduced reciprocally to the %T. Concerning %C, a concentration of 5% produces the smallest pores, since the influence of bisacrylamide on the pore size has a parabola-shape with a vertex at 5%. Gels are usually polymerized between two glass plates in a gel caster, with a comb inserted at the top to create the sample wells.