The figure from Moore (2020) shows a G protein-coupled receptor in a membrane. Note that "out" means outside the cell and "in" means facing the cytoplasm.The three amino acids "DRY" in loop I2 are required for protein targeting. What is the name of this kind of sequence, and what is its function?What protein targeting sequence is no longer included in this diagram? Why?The sequence "QXXNK" (where X is any amino acid) found in loop I3 has been identified based on its enzymatic activity. What is this activity?What particular domain would you expect to find in either Loop E1, E2, or E3? The gene that codes for this protein is a member of a family of genes that has arisen over evolutionary time. If you compared several of the genes in this family, would you expect their sequences to be most homologous (similar) in the region you describe in #3 above or #4 above? Why?

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Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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The figure from Moore (2020) shows a G protein-coupled receptor in a membrane. Note that "out" means outside the cell and "in" means facing the cytoplasm.

The three amino acids "DRY" in loop I2 are required for protein targeting. What is the name of this kind of sequence, and what is its function?
What protein targeting sequence is no longer included in this diagram? Why?
The sequence "QXXNK" (where X is any amino acid) found in loop I3 has been identified based on its enzymatic activity. What is this activity?
What particular domain would you expect to find in either Loop E1, E2, or E3?
The gene that codes for this protein is a member of a family of genes that has arisen over evolutionary time. If you compared several of the genes in this family, would you expect their sequences to be most homologous (similar) in the region you describe in #3 above or #4 above? Why?

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