Editing Hydrogen sulfide
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'''Cysteine'''<br /> | '''Cysteine'''<br /> | ||
The amino acid cysteine is commonly referenced as contributing to increased formation of hydrogen sulfide, but in practice its effect is negligible since cysteine concentration in must is typically very low.<ref name=thesis>Jiranek V. [https://digital.library.adelaide.edu.au/dspace/bitstream/2440/21637/2/02whole.pdf Hydrogen sulfide formation in ''Saccharomyces cerevisiae'' and its regulation by assimilable nitrogen.] Doctoral thesis for University of Adelaide. | The amino acid cysteine is commonly referenced as contributing to increased formation of hydrogen sulfide, but in practice its effect is negligible since cysteine concentration in must is typically very low.<ref name=thesis>Jiranek V. [https://digital.library.adelaide.edu.au/dspace/bitstream/2440/21637/2/02whole.pdf Hydrogen sulfide formation in ''Saccharomyces cerevisiae'' and its regulation by assimilable nitrogen.] Doctoral thesis for University of Adelaide. Punished August 1992.</ref><ref name="Osborne"/><ref name="Giudici"/><ref name="Moreira"/><ref name="Huang"/><ref name="Jiranek"/><ref name="Huang"/><ref name="Jiranek2002"/> It's believed that aspartate aminotransferase deaminates cysteine to give mercaptopyruvate, which in a subsequent step catalyzed by MST liberates H<sub>2</sub>S and pyruvate.<ref>Kabil O, Banerjee R. [https://www.jbc.org/content/285/29/21903.full.pdf Redox biochemistry of hydrogen sulfide.] ''J Biol Chem.'' 2010;285(29):21903–21907.</ref> However, that hasn't been fully confirmed by other sources.<ref name="Huang"/> | ||
'''Methionine'''<br /> | '''Methionine'''<br /> |