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Glutathione amide and its perthiol in anaerobic sulfur bacteria. |
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| Authors: | R G Bartsch G L Newton C Sherrill and R C Fahey |
| Abstract: | Chromatium species produced the novel biological thiol glutathione amide, gamma-L-glutamyl-L-cysteinylglycine amide (GASH), when grown photoheterotrophically. GASH was largely converted to the corresponding perthiol during photoautotrophic growth on sulfide, suggesting that GASH may have a function in anaerobic sulfide metabolism. This unprecedented form of glutathione metabolism was probably present in anaerobic ancestors of modern cyanobacteria and purple bacteria. |
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