Activating Compound | Comment | Organism | Structure |
---|---|---|---|
CYS3 | a bZIP transcriptional activator, is the key regulator and necessary for regulation expression of the sulfur-related genes, binds on a consensus sequence for CYS3 binding | Neurospora crassa |
Cloned (Comment) | Organism |
---|---|
gene met-2+, DNA and amino acid sequence determination and analysis, presence of CYS3 activator binding sites on the met-2+ promoter, quantitative enzyme expression analysis | Neurospora crassa |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
L-cystathionine + H2O | Neurospora crassa | - |
L-homocysteine + pyruvate + NH3 | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Neurospora crassa | Q1K8G0 | gene met-2+ | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
L-cystathionine + H2O | - |
Neurospora crassa | L-homocysteine + pyruvate + NH3 | - |
? |
Synonyms | Comment | Organism |
---|---|---|
beta-cystathionase | - |
Neurospora crassa |
Cofactor | Comment | Organism | Structure |
---|---|---|---|
pyridoxal 5'-phosphate | - |
Neurospora crassa |
Organism | Comment | Expression |
---|---|---|
Neurospora crassa | in a activator knockout DELTAcys-3 mutant strain, the met-2+ transcript levels are substantially reduced under either low- or high-sulfur growth conditions | down |
Neurospora crassa | expression of met-2+ in wild-type Neurspora crassa increases 3.1fold under sulfur-limiting growth conditions as compared to the transcript levels seen under high sulfur growth conditions, i.e., repressing conditions | up |
General Information | Comment | Organism |
---|---|---|
metabolism | cystathionine beta-lyase is part of the CYS3-controlled regulatory network | Neurospora crassa |
physiological function | cystathionine beta-lyase performs an essential role in the transsulfuration pathway by its primary reaction of forming homocysteine from cystathionine. It allows for the utilization of the intracellular pool of cystathionine for the synthesis of homocysteine which serves as the immediate precursor to methionine | Neurospora crassa |