Compare and contrast the activity of GLUT-1 and the glucose/Na transporter protein.

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Expert Solution

GLUT-1	glucose/Na+ transporter
Transports glucose down the concentration gradient	transports glucose from low concentration to the high concentration
does not require energy, passive transport	even though the process does not require the hydrolysis of ATP, the transport if Na+ into the cell to create the Na+ gradient requires energy, which is done by Na+/K+ ATPase. so the glucose/Na+ transporter transports glucose via secondary active transport.
Transports glucose into the cell	transports glucose into the cell
Transport one molecule of glucose at a time, GLUT-1 is a symporter	transports Na+ out of the cell and glucose into the cell, so Glucose/Na+ transporter is an antiporter
GLUT-1 is found in all tissues in the body	Glucose/Na+ transporter is found in the epithelial cells of the small intestine, it helps to absorb glucose from the food and it is also found in the proximal convoluted tubules of the nephron.

gladiator answered 10 months ago

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