ABCG4
ABCG4 is a gene that in humans encodes the ATP-binding cassette sub-family G member 4 protein. This protein is a member of the superfamily of ATP-binding cassette (ABC) transporters, which transport various molecules across extra- and intra-cellular membranes.
Function[edit | edit source]
The ABCG4 protein is a half-transporter that likely plays a role in multi-drug resistance. Half-transporters, like ABCG4, are believed to function as homodimers or heterodimers. ABCG4 is expressed in several tissues, with the highest expression in the brain and retina. It is thought to play a role in the transport of lipids and sterols, which are essential for normal brain function and vision.
Clinical significance[edit | edit source]
Mutations in the ABCG4 gene have been associated with several diseases. For example, a mutation in this gene has been linked to Stargardt disease, a form of juvenile macular degeneration. Additionally, ABCG4 has been implicated in the development of atherosclerosis, as it may play a role in the efflux of cholesterol from cells.
Research[edit | edit source]
Research into the function and potential therapeutic applications of ABCG4 is ongoing. For example, studies are investigating whether modulating the activity of ABCG4 could be a potential treatment strategy for diseases such as atherosclerosis and Stargardt disease.
See also[edit | edit source]
References[edit | edit source]
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