Part:BBa_K2450101

TEV protease tagged with mCherry

A non-self-cleaving TEV protease sequence with an N terminal mCherry tag and a C terminal His tag. The fluorophore tag allows for relative quantification of expression. The His tag allows for purification using a nickel column.

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
  INCOMPATIBLE WITH RFC[25]

  Illegal AgeI site found at 1444
  
• 1000
  COMPATIBLE WITH RFC[1000]

Usage and Biology

This part does not require any other parts to be functional.

TEV protease

TEV protease crystal structure

The Tobacco Etch Virus protease is a well-characterised specific protease with a cleavage sequence of Glu-Asn-Leu-Tyr-Phe-Gln-(CUT)-Gly.

This is a non-self-cleaving protease as we wanted a constant level of TEV protease produced.

We know that TEV protease can be purified using a 6-His tag.

In our project, we have used TEV protease as both a substitute for cruzipain, another specific protease, and as a signal amplifier after simulated cruzipain cleavage. This is because it is a very common endopeptidase used in biotechnology, so we could be sure of its activity.

References

PDB: 1Q31 Francesca Cesaratto, Oscar R. Burrone, Gianluca Petris, Tobacco Etch Virus protease: A shortcut across biotechnologies, In Journal of Biotechnology, Volume 231, 2016, Pages 239-249 Tropea J.E., Cherry S., Waugh D.S. (2009) Expression and Purification of Soluble His6-Tagged TEV Protease. In: Doyle S.A. (eds) High Throughput Protein Expression and Purification. Methods in Molecular Biology, vol 498. Humana Press