Summary

Name CBS
Full Name Cystathionine beta-synthase
Synonyms Beta-thionase, Serine sulfhydrase |
Primary ID P35520
Links - -
Type protein
Relations 7
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 (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).

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Relations

Regulator Mechanism target score
+ down-regulates quantity img/direct_inhibition.png chemical modification L-serine zwitterion 0.8
Publications: 1 Organism: Homo Sapiens
+ down-regulates quantity img/direct_inhibition.png chemical modification L-homocysteine zwitterion 0.8
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity by expression img/indirect-activation.png transcriptional regulation CBS 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity by expression img/indirect-activation.png transcriptional regulation CBS 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity img/direct-activation.png chemical modification L-cystathionine dizwitterion 0.8
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity by expression img/indirect-activation.png transcriptional regulation CBS 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity by expression img/indirect-activation.png transcriptional regulation CBS 0.2
Publications: 1 Organism: Homo Sapiens