Reducing environments processes involving

Computer simulation of the weathering processes involving reducing environments. 

A number of pre-treatments have been claimed to speed up the activation process. These can involve heating the catalyst in an inert atmosphere, a reducing environment or an oxidizing environment (Table 12.1). 

Sometimes the two joined cysteines are called cystine. Disulfide bond formation is an oxidative process the sulfurs each lose a hydrogen atom, becoming more oxidized. Proteins found outside the cell are more likely to have disulfides than are proteins found inside the cell. This is due to the more reducing environment in the cell. Thus, for example, digestive enzymes found in the small intestine have disulfides, while many enzymes involved in cell metabolism have free (reduced) cysteine -SH groups. 

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