Binding EGF to the EGF receptor causes phosphorylation of tyrosines on the cytoplasmic tail of the receptor. Which of the following best describes the mechanism by which this phosphorylation activates downstream signaling complexes? Select one A. Causes degradation of receptor by proteasome pathway B. Causes EGF receptor to be internalized so it can interact directly with downstream signaling molecules C. Tyrosine phosphorylation alters 3D structure of downstream signaling proteins causing them to change from an inactive to active conformation D. Causes release of EGF from receptor E. Alters the localization of downstream signaling partners in the cytoplasm
Binding EGF to the EGF receptor causes phosphorylation of tyrosines on the cytoplasmic tail of the receptor. Which of the following best describes the mechanism by which this phosphorylation activates downstream signaling complexes? Select one A. Causes degradation of receptor by proteasome pathway B. Causes EGF receptor to be internalized so it can interact directly with downstream signaling molecules C. Tyrosine phosphorylation alters 3D structure of downstream signaling proteins causing them to change from an inactive to active conformation D. Causes release of EGF from receptor E. Alters the localization of downstream signaling partners in the cytoplasm
Biology 2e
2nd Edition
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark
Chapter9: Cell Communication
Section: Chapter Questions
Problem 1VCQ: Figure 9.8 HER2 is a receptor tyrosine kinase. In 30 percent of human breast cancers, HER2 is...
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Binding EGF to the EGF receptor causes phosphorylation of tyrosines on the cytoplasmic tail of the receptor. Which of the following best describes the mechanism by which this phosphorylation activates downstream signaling complexes? Select one
A. Causes degradation of receptor by proteasome pathway
B. Causes EGF receptor to be internalized so it can interact directly with downstream signaling molecules
C. Tyrosine phosphorylation alters 3D structure of downstream signaling proteins causing them to change from an inactive to active conformation
D. Causes release of EGF from receptor
E. Alters the localization of downstream signaling partners in the cytoplasm
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