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Dictionary definition: symporter
- Article from:
- A Dictionary of Biology
Copyright© A Dictionary of Biology 2004, originally published by Oxford University Press 2004. (Hide copyright information)
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symporter
A
transport protein
that couples the movement of a substance across a cell membrane with the simultaneous movement of ions in the same direction. The substance is ‘pulled’ uphill against its concentration gradient by the flow of the ions down their pre-existing concentration gradient. Hence, it is a form of active transport, ...
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Article: Active Transport
Biology;
700+ words
... ... movement of molecules up their concentration gradient , using energy. Concentration ... concentration (outside), the NA + -K + pump must use energy ... ATP. For this reason, the NA + -K + pump is also considered ... gradients have two components: a concentration gradient and a voltage or ...
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