Biology, 18.04.2020 05:21 danyelleearly12
Long-chain fatty acids have an alkyl chain of more than 10 carbon atoms. Fatty acids with alkyl chains of this length are characterized as in terms of polarity and ___ in terms of size. This length decreases their ability to cross the lipid bilayer of the mitochondrial membrane. As a result, such fatty acids are activated in the cytoplasm by ___ . However, the resulting molecule, fatty acyl-CoA, is still too to cross the membrane. Therefore, a protein system involving carnitine is required for this transport to occur.
This system consists of enzymes ___ (located in the outer mitochondrial membrane) and (located in the inner mitochondrial membrane), which are responsible for the conjugation of the fatty acyl-CoA with carnitine and the delivery of the resulting molecule into the .
The purpose of such a mechanism is that the carnitine molecule is in size compared to coenzyme A but is classified as , which gives it the ability to pass the lipid bilayer. When a fatty acyl group is transferred to carnitine, the conjugate molecule passes into the intermembrane space via the pores in the outer mitochondrial membrane and the inner membrane is crossed with the help of .
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Long-chain fatty acids have an alkyl chain of more than 10 carbon atoms. Fatty acids with alkyl chai...
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