At body temperature, L-aspartate in proteins race-mizes to D-aspartate at an appreciable rate. Most pro-teins in the body have a very low level of D-aspartate, if itcan be detected at all. Elastin, however, has a fairly highlevel of D-aspartate. Moreover, the amount of D-aspartateincreases in direct proportion to the age of the person fromwhom the sample was taken. Why do you suppose thatmost proteins have little if any D-aspartate, while elastinhas levels of D-aspartate that increase steadily with age?

At body temperature, L-aspartate in proteins race-mizes to D-aspartate at an appreciable rate. Most pro-teins in the body have a very low level of D-aspartate, if itcan be detected at all. Elastin, however, has a fairly highlevel of D-aspartate. Moreover, the amount of D-aspartateincreases in direct proportion to the age of the person fromwhom the sample was taken. Why do you suppose thatmost proteins have little if any D-aspartate, while elastinhas levels of D-aspartate that increase steadily with age?

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter10: From Proteins To Phenotypes

Section: Chapter Questions

Problem 14QP: If phenylalanine was not an essential amino acid, would diet therapy (the elimination of...

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