Part:BBa_K1175400

This combinatory part is a self contained secretion system that combines a secretion and purification tag, a tripartite pump that is specific to the sec tag, a antinorovirus particle like antibody, Tse2 toxin mediated horizontal gene transfer mechanism.

Tripartite SecI pump

   These are the three essential parts prtD, prtE, prtF, that make up the Type I secretion system from Erwinia chrysanthemi.This part is made of 3 genes: prtD, prtE, and prtF, that constitute a type I Erwinia chrysanthemi secretion system. The Pump is expressed from a strong constitutive promoter, BBa_k206000, and has the translational terminator BBa_B0014. In pSB1C3. Used to secrete proteins containing prtB C-terminal tag. The prtB C-terminal tag is built into the protein generator [BBa_K1175012]. Any protein of interest can be inserted into the protein generator and then secreted when used in conjunction with this secretion system.

Secretion and purification tag

   This part BBa_K1175012 A composite part formed between BBa_K206000 strong pBAD promoter, BBa_B0034 strong RBS, and BBa_K215001 a purification and secretion tag; a secretion system designed by Washington iGEM team 2009 BBa_K215001. This tag can be used to secrete proteins of interest by inserting them into a specific NheI cut site flanked by C terminus His tag and an N terminus Secretion tag. Both tags can be removed by a TEV protease. The secretion tag is also specific to the tripartite pump. 

Antinorovirus like particle antibody

   This construct BBa_K875004 is designed for the expression of an already described engineered antinorovirus (NoV) monoclonal antibody (mAb 54.6) in fusion with LPP-OmpA. The antibody is expressed in a single chain fragment variable (scFv) format containing light (VL) and heavy (VH) variable domains separeted by a flexible peptide linker. It has already been reported that the scFv 54.6 binds a native recombinant NoV particles (VLPs) and inhibits VLP interaction with cells. LPP-OmpA functions as a leader sequence and an anchor to display the scFv ot the bacterial surface.The construct consistes of T5 Lac Operator (Bba_K875002), ribosomal binding site, LPP-OmpA-scFv 54.6 antinorovirus, Histidine tag (6HIS), Terminator (B0015).

T5cumate repressed Tse2 mediated, antihorizontal transfer mechanism

   This construct BBa_K1175003 is a modification of the part designed by iGEM2012 Team Trieste it has a T5cumate inducible promoter suppressed by the CymR gene integrated genome into the chassis E.coli Nissle 1917. This part will not be suppressed by CymR in the bacterial cells that have taken up the plasmid.