UQCRB

Ubiquinol-cytochrome c reductase binding protein (UQCRB) is a protein that in humans is encoded by the UQCRB gene. This protein is a component of the mitochondrial electron transport chain, specifically part of Complex III (also known as cytochrome bc1 complex). It plays a crucial role in the process of oxidative phosphorylation, which is essential for ATP synthesis in eukaryotic cells.

Function

UQCRB is involved in the binding of ubiquinol and the transfer of electrons from ubiquinol to cytochrome c. This process is vital for the generation of an electrochemical gradient across the inner mitochondrial membrane, which drives the synthesis of ATP by ATP synthase.

Clinical significance

Mutations in the UQCRB gene have been associated with various mitochondrial disorders, which can lead to a range of clinical symptoms due to impaired energy production. These disorders often affect tissues with high energy demands, such as muscle and nervous tissue.

Research

Studies have shown that UQCRB may also play a role in angiogenesis, the process of new blood vessel formation, which is important in both normal physiological processes and in pathological conditions such as cancer.

See also

• Mitochondrial diseases
• Electron transport chain
• Oxidative phosphorylation

External links

• UQCRB gene - NCBI
• UQCRB protein - UniProt