kinase inhibitor that binds Kinase X and prevents ATP binding. Kinase X is part of an important signaling cascade that promotes cell growth and proliferation. Many different types of mutations can cause drug resistance, via multiple mechanisms. In some cases, the mutation underlying resistance will cause a change to the cell that allows Kinase X to resume phosphorylating its targets. However, some mutations will cause resistance independently of Kinase X activity, meaning that Kinase X will NOT phosphorylate its substrate proteins, but the cell will be resistant anyway. An example of this type of resistance would be a mutation causing conformational change of the ATP binding pocket of Kinase X increased expression of an efflux pump that removes the drug from the cell constitutive activation of a downstream kinase in the signaling cascade

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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You have a patient who has recently developed resistance to a treatment regimen. She is being treated with a
kinase inhibitor that binds Kinase X and prevents ATP binding. Kinase X is part of an important signaling cascade
that promotes cell growth and proliferation.
Many different types of mutations can cause drug resistance, via multiple mechanisms. In some cases, the
mutation underlying resistance will cause a change to the cell that allows Kinase X to resume phosphorylating its
targets. However, some mutations will cause resistance independently of Kinase X activity, meaning that Kinase X
will NOT phosphorylate its substrate proteins, but the cell will be resistant anyway. An example of this type
resistance would be a mutation causing.
conformational change of the ATP binding pocket of Kinase X
increased expression of an efflux pump that removes the drug from the cell
constitutive activation of a downstream kinase in the signaling cascade
Transcribed Image Text:You have a patient who has recently developed resistance to a treatment regimen. She is being treated with a kinase inhibitor that binds Kinase X and prevents ATP binding. Kinase X is part of an important signaling cascade that promotes cell growth and proliferation. Many different types of mutations can cause drug resistance, via multiple mechanisms. In some cases, the mutation underlying resistance will cause a change to the cell that allows Kinase X to resume phosphorylating its targets. However, some mutations will cause resistance independently of Kinase X activity, meaning that Kinase X will NOT phosphorylate its substrate proteins, but the cell will be resistant anyway. An example of this type resistance would be a mutation causing. conformational change of the ATP binding pocket of Kinase X increased expression of an efflux pump that removes the drug from the cell constitutive activation of a downstream kinase in the signaling cascade
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