Difference between revisions of "Team:Peking/Part Collection"

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                             <div class="texttitle">Best basic parts</div>
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                            <h3 class="classic-title"><a href="http://parts.igem.org/Part:BBa_K2601010">BBa_K2601010</a></h3>
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                            <figure>
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                                <p style="text-align:center;"><img src=" https://static.igem.org/mediawiki/2018/1/1f/T--Peking--parts1.png" alt=""/></p>
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                                <figcaption style="text-align:center;">
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                                  Figure. 2 Schematic diagram of BBa_K2601010
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                            <div class="texttitle"> Best composite parts</div>
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                          <h3 class="classic-title"><a href="http://parts.igem.org/Part:BBa_K2601010">BBa_K2601010</a></h3>
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                                <figcaption style="text-align:center;">
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                                  Figure. 2 Schematic diagram of BBa_K2601010
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Revision as of 16:11, 17 October 2018

Parts

Favorite Parts

Schematic diagram

Figure. 1 Schematic diagram of most parts submitted by Peking iGEM 2018.

BBa_K2601010

Figure. 2 Schematic diagram of BBa_K2601010

We combined Frb, yEGFP and HOTag6 togethor in BBa_K2601010. Frb can interact with FKBP after adding rapamycin, which makes the RapaSPOT formation controllable. We constructed yeast strains with FKBP-mCherry-HOTag3 and Frb-yEGFP-HOTag6 and used 10 μM rapamycin to induce SPOT formation. Minutes after adding rapamycin, granules appeared and became larger gradually.


BBa_K2601011

Figure. 3 Schematic diagram of BBa_K2601011

To make our SPOT a reaction hub, we fused the enzymes of β-carotene synthase system, CrtI, CrtE and CrtYB into Frb-HOTag6 backbone. In the presence of rapamycin, FKBP-yEGFP-HOTag3 and Frb-enzyme-HOTag6 can condense into aggregates. And if the yeast contains SPOT, there will be more β-carotene producted. Meanwhile, we wondered if we can load enzymes onto SPOT mediated by indirected connection. We fused CFP to anti-GFP nanobody as the demonstration of our design and we observed the co-localization of the blue and green fluorescence as expected.


BBa_K2601012

Figure. 4 Schematic diagram of BBa_K2601012.

In the biobrick BBa_K2601012, we fused SUMO, yEGFP and HOTag3 together. SUMO is the interaction module which can bind SIM spontaneously, while HOTag3 can introduce multivalence. These two features are necessary for SPOT formation. We expressed SUMO-yEGFP-HOTag3 and SIM-mCherry-HOTag6 in one yeast strain, and we observed the colocalization of yEGFP and mCherry in two different fluorescence channels, which confirms our hypothesis that the two components could form synthetic organelles.


Part Table
BBa_ Part
K2601000 Promoter-tet07
K2601001 Promoter-PDH3
K2601002 SUMO
K2601003 SIM
K2601004 HOTag3
K2601005 HOTag6
K2601007 Frb-yEGFP
K2601008 FKBP-yEGFP
K2601010 Frb-yEGFP-HOTag6
K2601011 FKBP-yEGFP-HOTag3
K2601012 SUMO-yEGFP-HOtag3
K2601021 Tet07-Frb-yEGFP
K2601023 PDH3-Frb-yEGFP
K2601025 Tet07-FKBP-yEGFP
K2601026 TEF1-FKBP-yEGFP
K2601027 PDH3-FKBP-yEGFP
K2601032 Tet07-Frb-yEGFP-HOTag6
K2601033 TEF1-Frb-yEGFP-HOTag6
K2601034 PDH3-Frb-yEGFP-HOTag6
K2601037 TEF1-FKBP-yEGFP-HOTag3
K2601038 PDH3-FKBP-yEGFP-HOTag3
K2601040 Tet07-SUMO-yEGFP-HOtag3
K2601041 TEF1-SUMO-yEGFP-HOtag3
K2601042 PDH3-SUMO-yEGFP-HOtag3
K2601054 PDH3-Frb-crtE-HOTag6
K2601056 Tet07-Frb-crtYB-HOTag6
K2601058 PDH3-Frb-crtYB-HOTag6
K2601060 SIM-crtE-Hotag6
K2601061 SIM-crtYB-Hotag6
Best basic parts

BBa_K2601010

Figure. 2 Schematic diagram of BBa_K2601010
Best composite parts

BBa_K2601010

Figure. 2 Schematic diagram of BBa_K2601010
Part Collection

2018 Peking iGEM team members devoted themselves to constructing a part collection that can drive phase separation. We have not only submitted all of new basic HOTag parts, but also provided multiple composite parts combining HOTags with other protein-protein interaction modules and fluorescent reporters. The basic part, HOTag3, is a homo-oligomeric short peptide containing only 30 amino acids. It has high stoichiometry, forming hexamer spontaneously. The HOTag3, together with another tetrameric HOTag6, can robustly drive phase separation upon protein-protein interaction. Protein-protein interaction is achieved by our dimerization parts, including FKBP/Frb and SUMO/SIM. Functions of all the parts were thoroughly tested. Some thermodynamic and kinetic properties of the parts were characterized as well. We believe the HOTag is useful tool for other iGEM teams to investigate protein phase separation and design synthetic organelles.