Gene of wilsons disease is –
**Core Concept:**
Wilson's disease (also known as kayser-Fleischer ring disease) is a rare autosomal recessive genetic disorder caused by mutations in the ATP7B gene, which encodes the copper-transporting ATPase protein called P1B1. This protein is involved in the transport of copper within liver cells and its dysfunction leads to copper accumulation in the liver and brain, causing neurological and psychiatric symptoms.
**Why the Correct Answer is Right:**
The correct answer, ATP7B, is the gene responsible for Wilson's disease. ATP7B encodes the P1B1 protein, which is crucial for copper transport within liver cells. Mutations in this gene result in copper accumulation in the liver and brain, leading to the clinical manifestations of Wilson's disease.
**Why Each Wrong Option is Incorrect:**
A. ATP7A (ATP7A gene) is responsible for Menkes disease, another copper transport disorder, but not Wilson's disease.
B. HFE gene is associated with hemochromatosis, a different genetic disorder involving iron accumulation, not copper.
C. Wilson's disease is not related to the HSP10 gene, which is involved in heat shock protein production.
D. ATP7B is the correct answer, so this option is incorrect as well.
**Clinical Pearl:**
Understanding the role of ATP7B gene in Wilson's disease helps in recognizing this rare condition and its clinical manifestations, including neurological and psychiatric symptoms. Knowledge of distinct genetic disorders and their associated genes is essential for accurate diagnosis and appropriate management of patients presenting with these symptoms.