Team:Tuebingen/ProjectMechanism

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(Mechanism)
 
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== '''Mechanism''' ==
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= Mechanism =
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__TOC__
[[File:MechanismScheme.png|right|thumb|400px|mechanism]]
[[File:MechanismScheme.png|right|thumb|400px|mechanism]]
[[File:Tue-gene-network.png|right|thumb|400px|simple regulatory network]]
[[File:Tue-gene-network.png|right|thumb|400px|simple regulatory network]]
[[File:Igem_2.3.jpg|right|400px|thumb|planned mechanism]]
[[File:Igem_2.3.jpg|right|400px|thumb|planned mechanism]]
Naturally occuring iron receptors of the PAQR family are found to repress
Naturally occuring iron receptors of the PAQR family are found to repress
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fet3 promotor on high levesl of extra-cellular iron. According to
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fet3 promotor on high levels of extra-cellular iron. According to
[http://www.ncbi.nlm.nih.gov/pubmed/18603275 J Smith et al.]
[http://www.ncbi.nlm.nih.gov/pubmed/18603275 J Smith et al.]
human mPR expressed in yeast induced the same signal binding to estrogen. Relying
human mPR expressed in yeast induced the same signal binding to estrogen. Relying
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''On the side several graphical representations of this mechanism are available.''
''On the side several graphical representations of this mechanism are available.''
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=== Receptors ===
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== Receptors ==
Membrane progesterone receptors are membrane bound, seven-transmembrane receptors and belong to the PAQR family (progesterone adiponectin Q receptor). These G-protein coupled receptors activate inhibitory Gi units.
Membrane progesterone receptors are membrane bound, seven-transmembrane receptors and belong to the PAQR family (progesterone adiponectin Q receptor). These G-protein coupled receptors activate inhibitory Gi units.
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=== Inhibitors and their targets ===
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== Inhibitors and their targets ==
An appropriate inhibitor/promotor combination is a crucial step in our
An appropriate inhibitor/promotor combination is a crucial step in our
pathway and should be selected wisely.
pathway and should be selected wisely.
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Finally we chose FET3 as our promoter and both ROX1 and MIG1 as
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Finally we chose fet3 as our promoter and both rox1 and mig1 as
inhibitors. It is very likely, that they don't seem to repress any gene
inhibitors. It is very likely, that they don't seem to repress any gene
expression that are crucial for yeast.
expression that are crucial for yeast.
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=== Reporter genes ===
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== Reporter genes ==
The last station of our signaling pathway should be a reporter gene
The last station of our signaling pathway should be a reporter gene
which amplifies our initial signal to allow a quantitative  measurement.
which amplifies our initial signal to allow a quantitative  measurement.
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The enzyme '''luciferase''' fulfills these conditions and is our
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The enzyme luciferase fulfills these conditions and is our
candidate of choice.
candidate of choice.

Latest revision as of 08:54, 26 September 2012



Mechanism

Contents

mechanism
simple regulatory network
planned mechanism

Naturally occuring iron receptors of the PAQR family are found to repress fet3 promotor on high levels of extra-cellular iron. According to [http://www.ncbi.nlm.nih.gov/pubmed/18603275 J Smith et al.] human mPR expressed in yeast induced the same signal binding to estrogen. Relying on this results we will try to express various mPRs of Danio rerio, Xanophus laevis in yeast which we find fitting to measure endocrine substances that influence fish.

We will transform the negative signal (fet3 repression) into a positive signal by regulating a repressor (rox1 or mig1) with Pfet3. This repressor will in turn regulate the expression of the reporter gene (firefly luciferase or beta-galactosidase) and allow quantitative measurement.

On the side several graphical representations of this mechanism are available.

Receptors

Membrane progesterone receptors are membrane bound, seven-transmembrane receptors and belong to the PAQR family (progesterone adiponectin Q receptor). These G-protein coupled receptors activate inhibitory Gi units.

Inhibitors and their targets

An appropriate inhibitor/promotor combination is a crucial step in our pathway and should be selected wisely.

Finally we chose fet3 as our promoter and both rox1 and mig1 as inhibitors. It is very likely, that they don't seem to repress any gene expression that are crucial for yeast.

Reporter genes

The last station of our signaling pathway should be a reporter gene which amplifies our initial signal to allow a quantitative measurement.

The enzyme luciferase fulfills these conditions and is our candidate of choice.