Antiport

... to have two phases. It uses a preexisting elecrochemical gradient of one substance to push other substance against its gradient (symport or antiport). For example, HCO3/Cl antiport, Na/Glc symport (intestine epithelium). The preexisting gradient is generated by primary transporter ( 1st ...

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... pumping H+ outwards by H+-ATPase. Second phase is retrieval of H+ connected with co-transport of our substance into or out of the cell (symport or antiport with H+). My question/doubt is whether that actively transported substance may be transported indyvidually (by means of ATP hydrolysis of course) ...

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... HCO3- + H+ H+ is excreted into the lumen through a pump identical to the one plants use to create H+ gradients Now, Cl- enters the cell through an antiport with HCO3-, so the cell solves 2 problems: gets rid of HCO3- and gets the Cl- inside the cell. Then Cl- is excreted into the lumen through ...

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... same direction as their concentration gradient, you can do that passively... Na is used in simport mechanisms to import glucose, aminos etc and in antiport mechanisms, such as the Na/Ca antiporter. This works by the following mechanism: one ion of Na comes in, one ion of Ca goes out. Hope it's ...

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... same direction as their concentration gradient, you can do that passively... Na is used in simport mechanisms to import glucose, aminos etc and in antiport mechanisms, such as the Na/Ca antiporter. This works by the following mechanism: one ion of Na comes in, one ion of Ca goes out. Hope it's ...

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