In glycogen metabolism, amylo 1-6-glycosidase acts on glycogen to produce?
## **Core Concept**
Amylo-1,6-glycosidase, also known as debranching enzyme, plays a crucial role in glycogen metabolism. It acts on glycogen, a complex carbohydrate stored in the liver and muscles, by cleaving specific glycosidic bonds.
## **Why the Correct Answer is Right**
The correct answer, , indicates that amylo-1,6-glycosidase acts on glycogen to produce glucose. This enzyme specifically cleaves the α-1,6-glycosidic bonds in glycogen, which are the branch points. By doing so, it releases glucose molecules that can then be used by the body for energy. This process is essential for the complete breakdown of glycogen.
## **Why Each Wrong Option is Incorrect**
- **Option A:** . This option is incorrect because while glycogen phosphorylase does act on glycogen, it primarily produces glucose-1-phosphate, not glucose directly.
- **Option B:** . This is incorrect because amylo-1,6-glycosidase specifically acts on the branch points of glycogen, not producing maltose directly.
- **Option C:** . This option is incorrect as it inaccurately suggests the production of maltotriose or other oligosaccharides as the primary action of amylo-1,6-glycosidase.
## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that deficiencies in amylo-1,6-glycosidase lead to Cori's disease (also known as Forbes disease), a type of glycogen storage disease. This condition results in the accumulation of abnormal glycogen with short outer branches, leading to symptoms such as hypoglycemia, hepatomegaly, and developmental delays.
## **Correct Answer:** . Glucose