Intermembrane space

The intermembrane space is the region between the inner membrane and the outer membrane of a mitochondrion or a chloroplast. Its main function is nucleotide phosphorylation . Channel proteins called porins in the outer membrane allow free movement of ions and small molecules into the intermembrane space. This means that it is essentially continuous with the cytosol in terms of solutes relevent for the functioning of these organelles. Enzymes destined for the mitochondrial matrix or the stroma can bypass the intermembrane space via transport through translocases . These are known as TOM and TIM in mitochondria and TOC and TIC in chloroplasts. It tends to have a low pH because of the proton gradient which results when protons are pumped from the mitochondrial matrix into the intermembrane space during electron transport. The structures responsible for this are coenzyme q , complex I , complex II , and complex III .

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[0] New in GEOLOGY: Gems, Darwin, Mars, Hemp, Snowball Earth, a Siberian Impact Crater, and More [0] Engineered microbes grow in the dark [0] Research examines new methods for managing digestive health

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Cached Biology News:'Lost world' discovered around Antarctic vents 2 Manipulating way bacteria 'talk' could have practical applications, Texas A&M profs say 2 Manipulating way bacteria 'talk' could have practical applications, Texas A&M profs say 3 Jeanne Baret, botanist and first female circumnavigator, finally commemorated in name of new species 2

'Lost world' discovered around Antarctic vents Manipulating way bacteria 'talk' could have practical applications, Texas A&M profs say Jeanne Baret, botanist and first female circumnavigator, finally commemorated in name of new species

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