In: Biology
Compare and contrast the activity of GLUT-1 and the glucose/Na transporter protein.
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. |