CACNB2

CACNB2 is a gene in humans that encodes the beta-2 subunit of the voltage-dependent calcium channel complex. This complex plays a crucial role in the release of neurotransmitters from neurons and in muscle contraction. Mutations in this gene have been associated with various disorders, including Brugada syndrome, idiopathic generalized epilepsy, and autism.

Function

The CACNB2 gene provides instructions for making a protein that is part of a family of proteins known as voltage-gated calcium channels. These channels, which are located in the cell membrane, control the flow of positively charged calcium atoms (calcium ions) into cells. The protein produced from the CACNB2 gene forms a subunit of the channel that helps regulate its activity.

Clinical significance

Mutations in the CACNB2 gene have been associated with a variety of disorders. These include Brugada syndrome, a condition that disrupts the heart's normal rhythm and can lead to irregular heartbeats (arrhythmias), fainting, and sudden death. Mutations in this gene have also been found in people with idiopathic generalized epilepsy, a group of related conditions characterized by recurrent seizures. In addition, some studies suggest that changes in the CACNB2 gene may be associated with autism, a developmental disorder that affects communication and behavior.

See also

• Voltage-dependent calcium channel
• Brugada syndrome
• Idiopathic generalized epilepsy
• Autism