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McCune
Albright syndrome is an unusual type of disease with varied symptoms.
In this disease, a mutation
occurs sometime after conception, affecting only some of the body's
cells. The
number and type of symptoms depend on which cells—and
thus which organs—are
affected. Scientists have found that the mutation affects the gene that codes for he same G-protein involved in cholera. This G-protein gets stuck in the "on" position. In skin cells, this causes darker than normal pigment. If the mutation affects bone cells, it causes weakness and fractures. In hormone-producing cells, the mutation causes the release of excess hormones.
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