Difference between revisions of "Part:BBa K5301003"
 
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<partinfo>BBa_K5301003 short</partinfo>
 
<partinfo>BBa_K5301003 short</partinfo>
  
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  SpyTag comes from the spontaneous isopeptide bond domain in streptococcus pyogenes fibronectin-binding protein FbaB. It can cooperate with SpyCatcher to achieve covalent binding of proteins through Tag-Catcher interaction. The robust reaction conditions and irreversible linkage of SpyTag-Catcher provide a targetable lock in cells and a stable module for new protein architectures.
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<p>SpyTag comes from the spontaneous isopeptide bond domain in streptococcus pyogenes fibronectin-binding protein FbaB. It can cooperate with SpyCatcher to achieve covalent binding of proteins through Tag-Catcher interaction. The robust reaction conditions and irreversible linkage of SpyTag-Catcher provide a targetable lock in cells and a stable module for new protein architectures.</p>
  
 
<center><html><img src='https://static.igem.wiki/teams/5301/parts/spytag-nw50-spycatcher.png' width='400px'></html></center>
 
<center><html><img src='https://static.igem.wiki/teams/5301/parts/spytag-nw50-spycatcher.png' width='400px'></html></center>

Latest revision as of 09:33, 2 October 2024


SpyTag can achieve covalent binding of proteins through Tag-Catcher interaction.

SpyTag comes from the spontaneous isopeptide bond domain in streptococcus pyogenes fibronectin-binding protein FbaB. It can cooperate with SpyCatcher to achieve covalent binding of proteins through Tag-Catcher interaction. The robust reaction conditions and irreversible linkage of SpyTag-Catcher provide a targetable lock in cells and a stable module for new protein architectures.

Figure 1.Structure of Spycatcher-NW50-SpyTag protein extract.From this structure diagram, it is predicted that spytag and spycatcher can be successfully combined at both ends of the spNW50.

Sequence and Features


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    COMPATIBLE WITH RFC[12]
  • 21
    COMPATIBLE WITH RFC[21]
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    COMPATIBLE WITH RFC[25]
  • 1000
    COMPATIBLE WITH RFC[1000]


Characterization

In the design, we intend to use the robust reaction conditions and irreversible connections of SpyCatcher and SpyTag to link the two ends of the MSP protein, thereby enabling the formation of nanodiscs. In the experiment, we successfully characterized the spNW50 [BBa_K5301015] protein with spytag and spycatcher, but their presence promoted the dimerization of the protein (Figure 2a). Through the engineering of iGEM24_BNU-China, we alleviated the dimerization problem and produced a monomeric protein with two tags (Figure 2bc).
Figure 2. SDS analysis of spNW50 with Spytag results of dimerization(a) and monomerization(bc).

Conclusion

Finally, through electron microscope imaging, we determined that the nanodisc was successfully generated under the action of spytag and spycatcher(Figure 3).
Figure 3. Electron microscopic images(a) and DLS particle size results(b) of nanodiscs by spNW50 and Spytag.