SF3B3

SF3B3, also known as splicing factor 3b subunit 3, is a protein that in humans is encoded by the SF3B3 gene. This gene is a member of the splicing factor 3b subunit family, which plays a crucial role in the process of alternative splicing, a mechanism by which a single gene can produce multiple protein products.

The SF3B3 protein is involved in the early steps of pre-mRNA splicing, specifically in the formation of the spliceosome, the large ribonucleoprotein complex responsible for splicing. It interacts with other splicing factors, such as SF3B1 and SF3B4, to facilitate the recognition and binding of splice sites within the pre-mRNA.

Mutations in the SF3B3 gene have been associated with several neurological and developmental disorders, including intellectual disability, epilepsy, and autism spectrum disorder. These mutations can disrupt the normal function of the spliceosome, leading to abnormal splicing patterns and the production of truncated or non-functional proteins.

Research into the function and regulation of SF3B3 is ongoing, with a focus on understanding its role in normal development and its potential as a therapeutic target for genetic disorders. The SF3B3 gene is located on chromosome 15 in humans, and it consists of 12 exons. The protein encoded by this gene is a component of the spliceosome, with a molecular weight of approximately 100 kDa.