The diagram below shows a closeup of regulatory proteins binding to one of the UASG elements near the GAL7, GALIO, and GALI genes, which code for the protein products needed for yeast to use the sugar galactose. The red triangle symbolizes an "effector" molecule that binds to Gal80p. In this hypothesis (which has since been shown to be incorrect), what could be happening to Gal80p when it is bound to the effector molecule that causes it to change its position and uncover the Gal4p transcriptional activation domain. Hint: think about w hat effector molecules do upon binding to proteins such as the the Lac repressor protein or the CAP protein.

Human Heredity: Principles and Issues (MindTap Course List)
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Chapter10: From Proteins To Phenotypes
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Problem 13QP: Suppose that in the formation of phenylalanine hydroxylase mRNA, the exons of the pre-mRNA fail to...
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The diagram below shows a closeup of regulatory proteins binding to one of the UASG elements near the GAL7, GALI0, and GALI
genes, which code for the protein products needed for yeast to use the sugar galactose. The red triangle symbolizes an "effector"
molecule that binds to Gal80p. In this hypothesis (which has since been shown to be incorrect), what could be happening to Gal80p
when it is bound to the effector molecule that causes it to change its position and uncover the Gal4p transcriptional activation domain.
Hint: think about what effector molecules do upon binding to proteins such as the the Lac repressor protein or the CAP protein.
Galactose absent, glucose absent
Gal80p.
_Activation domain
Gal4p
dimer
-Binding domain
UASG
Galactose present, glucose absent
Activation domain
Gal80p-
Binding domain
UASG
For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).
Transcribed Image Text:The diagram below shows a closeup of regulatory proteins binding to one of the UASG elements near the GAL7, GALI0, and GALI genes, which code for the protein products needed for yeast to use the sugar galactose. The red triangle symbolizes an "effector" molecule that binds to Gal80p. In this hypothesis (which has since been shown to be incorrect), what could be happening to Gal80p when it is bound to the effector molecule that causes it to change its position and uncover the Gal4p transcriptional activation domain. Hint: think about what effector molecules do upon binding to proteins such as the the Lac repressor protein or the CAP protein. Galactose absent, glucose absent Gal80p. _Activation domain Gal4p dimer -Binding domain UASG Galactose present, glucose absent Activation domain Gal80p- Binding domain UASG For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).
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