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Draw each of the basic amino acids at ph 3.0, as in stomach acid. How may...

Draw each of the basic amino acids at ph 3.0, as in stomach acid. How may this change the way they behave in a folded protein?

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Answer #1

Histidine is the basic amino acid in stomach. The structure is

  • Amino acids interact with each other to produce a well-defined three-dimensional structure, the folded protein (the right hand side of the figure), known as the native state. The resulting three-dimensional structure is determined by the amino acid sequence
  • The essential fact of folding, however, remains that the amino acid sequence of each protein contains the information that specifies both the native structure and the pathway to attain that state. This is not to say that nearly identical amino acid sequences always fold similarly.
  • Histidine is also in the stomach. It is helpful in producing gastric juices, and people with a shortage of gastric juices or suffering from indigestion, may also benefit from this nutrient.
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