Aquaporins, also called water channels, are channel proteins from a larger family of major intrinsic proteins that form pores in the membrane of biological cells, mainly facilitating transport of water between cells. the cell membranes of a variety of different bacteria, fungi, animal and plant cells contain aquaporins through which water can flow more rapidly into and out of the cell than by. Itu perbedaan utama antara porins dan aquaporins adalah itu porins adalah pori-pori dan saluran berisi air yang ditemukan di membran bakteri dan eukariota.sedangkan aquaporin merupakan protein membran yang membentuk saluran selektif air pada sel makhluk hidup. molekul yang berbeda masuk dan keluar sel melintasi membran plasma pada organisme hidup.. Ringkasan - porins vs aquaporins. porin adalah liang berisi air yang mengangkut molekul hidrofilik dengan pelbagai saiz dan cas. aquaporin adalah saluran protein membran utama yang mengangkut air melintasi membran plasma. mereka adalah protein membran intrinsik kecil, sangat hidrofobik..
Aquaporins are membrane water channels that play critical roles in controlling the water contents of cells. these channels are widely distributed in all kingdoms of life, including bacteria, plants, and mammals.. The discovery of aquaporin-1 (aqp1) by agre and associates answered the longstanding biophysical question of how water specifically crosses biological membranes. in the kidney at least 7 aquaporins are expressed at distinct sites. aqp1 is extremely abundant in the proximal tubule and descending thin …. Aquaporins solve this problem; the reabsorption in the proximal tubule and loop of henle occurs as water follows the reabsorbed sodium via osmosis. the protein osmotic pressure coupled with the hydrostatic pressure of the peritubular capillaries effects the volume of water excreted or conserved also..
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