KCNJ13

KCNJ13 is a gene that encodes the protein Kir7.1, a member of the Kir (Inwardly rectifying potassium channels) family. This protein plays a crucial role in maintaining the balance of potassium in cells and is involved in various physiological processes. Mutations in this gene have been associated with several medical conditions, including Leber congenital amaurosis and Snowflake vitreoretinal degeneration.

Function

The KCNJ13 gene provides instructions for making a protein called Kir7.1. This protein forms a channel that controls the flow of potassium ions into cells. These channels are primarily found in the retina and the kidney, where they play a vital role in maintaining the correct balance of ions and the overall homeostasis of the cell.

Clinical significance

Mutations in the KCNJ13 gene can lead to a variety of medical conditions. For example, a mutation in this gene has been identified as a cause of Leber congenital amaurosis, a severe type of eye disorder that primarily affects the retina. This condition is characterized by vision loss at birth or in the first few months of life, nystagmus, and deep-set eyes.

Another condition associated with mutations in the KCNJ13 gene is Snowflake vitreoretinal degeneration. This is a rare, autosomal dominant genetic disorder characterized by a variety of ocular symptoms, including cataract, retinal degeneration, and abnormal vitreous.

Research

Research into the KCNJ13 gene and its associated conditions is ongoing. Understanding the function of this gene and how mutations affect it could lead to new treatments for the associated conditions.

File:KCNJ13 gene location on chromosome.png

Location of the KCNJ13 gene on chromosome 2

See also

• Inwardly rectifying potassium channel
• Leber congenital amaurosis
• Snowflake vitreoretinal degeneration