Transport protein

Transport proteins are also used in active transport. The proteins bind to the larger molecule needed within the cell and guide it into the cell, moving particles against the concentration gradient.
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Transport protein
A transport protein is a protein involved in facilitated diffusion. Changes in the conformation move the binding site to the opposite side of the protein.
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A transport protein in the plasma membranes of a plant or animal cell that specifically facilitates the diffusion of water across the membrane (osmosis).
aqueous solution
(ay-kwee-us) ...
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The transport proteins integrated into the cell membrane are often highly selective about the chemicals they allow to cross.
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Analysis of the complete genome sequence of Geobacter sulfurreducens has revealed that this organism has a high percentage of genes for putative electron-transport proteins and that the expression of these genes is likely to be highly regulated.
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For example, most species lack glutathione peroxidase, glutathione reductase and respiratory-gas transport proteins and thus allow oxygen to diffuse directly into cells.
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carrier proteins - membrane transport protein that binds to a solute and transports it across the membrane by undergoing a series of conformational changes ...
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active transport A process that requires an expenditure of ATP energy to move molecules across a cell membrane; usually moved against the concentration gradient with the aid of specific transport proteins.
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