Team:Freiburg/Basic Part

Parts: Basic

Here you can find our basic parts.

Name
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Type
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Description
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Length
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BBa_K3009001 Signalling FPR2 receptor 1059 bp
BBa_K3009030 DNA MJ tyrosyl synthetase 921 bp
BBa_K3009031 Protein MCP 363 bp
BBa_K3009032 RNA MS2 loops 129 bp
BBa_K3009033 Protein SPD5 3594 bp
BBa_K3009012 Other Aspartate Racemase (PhAspR) 687 bp
BBa_K3009013 Other DAAO 1104 bp

 

This is our favorite basic part:

Spindle-deficient protein 5 derived from C. elegans is able to assemble into condensates that built a separate phase from the surronding cytosol, therefore emulating a reaction compartment. Fusion proteins will also be confined to this organelle.

SPD 5 proteins assemble into phase-separated condensates in the cytosol, building a dynamic artificial organelle. Fusion proteins of SPD5 will be confined inside the organelle and separated from the all other components inside the cell. Due to the lack of a membrane, all other molecules can freely move in and out of the organelle.

In C. elegans, SPD5 , forms condensates that aid the organization of microtubule arrays in the centrosome.

By expressing a SPD5:sfGFP fusion in E. coli , we have proven droplet formation in the E. coli cytosol.

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Fig. 1: E. coli cells expressing a SPD5:sfGFP fusion verify droplet formation

To confirm that the constructs were were seeing were in fact dynamic droplets and not dead aggregates, we bleached several regions of interest with a 475 nm laser beam. Due to the dynamic nature of the droplets, fluorescent should be recovered by diffusion of unbleached proteins

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Fig.2 Recovery of fluorescence after photobleaching in SPD5:sfGFP expressing C321.deltaA cells.