Function | 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. Also involved in the production of hydrogen sulfide, a gasotransmitter with signaling and cytoprotective effects on neurons. |
Protein Name | Cystathionine Beta-SynthaseBeta-ThionaseSerine Sulfhydrase |
Database Links | Reactome: R-HSA-1614603Reactome: R-HSA-2408508 |
Cellular Localisation | CytoplasmNucleus |
Alternative Protein Names | Cystathionine Beta-Synthase proteinBeta-Thionase proteinSerine Sulfhydrase proteinCBS protein |
Information sourced from Uniprot.org