Aliases for CBS Gene
External Ids for CBS Gene
Previous GeneCards Identifiers for CBS Gene
The protein encoded by this gene acts as a homotetramer to catalyze the conversion of homocysteine to cystathionine, the first step in the transsulfuration pathway. The encoded protein is allosterically activated by adenosyl-methionine and uses pyridoxal phosphate as a cofactor. Defects in this gene can cause cystathionine beta-synthase deficiency (CBSD), which can lead to homocystinuria. This gene is a major contributor to cellular hydrogen sulfide production. Multiple alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Feb 2016]
GeneCards Summary for CBS Gene
CBS (Cystathionine-Beta-Synthase) is a Protein Coding gene. Diseases associated with CBS include Homocystinuria, B6-Responsive And Nonresponsive Types and Homocystinuria. Among its related pathways are Folate-Alcohol and Cancer Pathway and Viral mRNA Translation. GO annotations related to this gene include protein homodimerization activity and enzyme binding. An important paralog of this gene is CBSL.
UniProtKB/Swiss-Prot for CBS Gene
Hydro-lyase catalyzing the first step of the transsulfuration pathway, where the hydroxyl group of L-serine is displaced by L-homocysteine in a beta-replacement reaction to form L-cystathionine, the precursor of L-cysteine. This catabolic route allows the elimination of L-methionine and the toxic metabolite L-homocysteine (PubMed:23981774, PubMed:20506325, PubMed:23974653). Also involved in the production of hydrogen sulfide, a gasotransmitter with signaling and cytoprotective effects on neurons (By similarity).