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The chloride potassium symporter is a membrane transport protein of the solute carrier family 12 that is present in the S3-segment of the renal proximal tubule [1] and in the neuron. [2] It functions in renal chloride reabsorption to transport chloride across the basolateral membrane. [1]
Anterograde transport is often the transportation from the cell body to the periphery of the neuron whereas retrograde transport brings organelles and vesicles away from the axon terminus to the cell body. Anterograde transport is regulated by kinesins, a class of motor proteins. Kinesins have two head domains which work together like feet ...
LRP2 and CUBAM are responsible for the uptake of most of the filtered proteins that escape the glomerular filtration barrier in the proximal tubule of the kidney. [13] [14] The endocytic capacity of the proximal tubule cells is dictated by the combined function of LRP2, CUBAM, and Dab2. [14]
The collecting duct system of the kidney consists of a series of tubules and ducts that physically connect nephrons to a minor calyx or directly to the renal pelvis.The collecting duct participates in electrolyte and fluid balance through reabsorption and excretion, processes regulated by the hormones aldosterone and vasopressin (antidiuretic hormone).
The distal convoluted tubule has a different structure and function to that of the proximal convoluted tubule. Cells lining the tubule have numerous mitochondria to produce enough energy for active transport to take place. Much of the ion transport taking place in the distal convoluted tubule is regulated by the endocrine system.
The proximal tubule is the segment of the nephron in kidneys which begins from the renal pole of the Bowman's capsule to the beginning of loop of Henle.At this location, the glomerular parietal epithelial cells (PECs) lining bowman’s capsule abruptly transition to proximal tubule epithelial cells (PTECs).
The transport of glucose across the proximal tubule cell membrane involves a complex process of secondary active transport (also known as co-transport). [3] This process begins with the Na + /K + ATPase on the basolateral membrane. This enzyme uses ATP to pump 3 sodium ions out of the cell into the blood while bringing 2 potassium ions into the ...
Because NCC is located at the apical membrane of the distal convoluted tubule of the nephron, it faces the lumen of the tubule and is in contact with the tubular fluid. . Using the sodium gradient across the apical membrane of the cells in distal convoluted tubule, the sodium-chloride symporter transports Na + and Cl − from the tubular fluid into these