Genetic transport disease definition - medical term
Within the body, many molecules are able to
pass across the membranes that surround cells. These molecules can accomplish this
feat due to specific transport systems. These systems include special receptors
on the membrane of the cell and special carrier proteins. The receptor recognizes
the molecule and receives it on the cell membrane. Then the molecule hitches a ride
through the cell membrane on the back of a carrier protein.
With such remarkable specificity, it is little wonder that sometimes there are
defects in transport systems. Several dozen different diseases are now known to
be due to transport defects.
Am example of a transport disease is cystinuria, the most common defect known
in the transport of an amino acid (namely, cystine) and a significant cause of kidney
stones. Like cystinuria, all transport defects are genetic (inherited).
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