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Typically, people with vitamin 12 deficiency may develop skin darkening on the hands, feet, gums, and tongue
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As a tripeptide, also abbreviated GSH, it helps to regulate the production of melanin, which is responsible for skin pigmentation
In addition to functioning as a purification tag, GST acts as a chaperone for the attached protein, promoting its correct folding, as well as preventing it from becoming aggregated in inclusion bodies when expressed in bacteria
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