Revision as of 17:08, 17 October 2014

PBAN (Agrotis ipsilon)

Introduction: PBAN (Pheromone Biosynthesis Activating Neuropeptide)

Fig.1-1 A coding gene of a Agrotis ipsilon's PBAN

Mechanism of PBAN

PBAN (Pheromone Biosynthesis Activating Neuropeptide) is one kind of peptides that can activate biosynthesis of pheromones of insects we target. Once a PBAN binds with the G-protein coupled receptor on an insect’s pheromone gland, the signal send by the G-protein coupled receptor activates the kinase and phosphatase, and then kinase and phosphatase can activate enzymes that participate in the biosynthesis of insect pheromone, which will be emitted.

Features of PBAN

1. Species-specific: PBAN is species-specific just like pheromones, meaning that every kind of insect produces specific PBAN that only binds with its specific receptor, resulting in the production of a particular pheromone.

2. Small and simple: The coding sequence for a PBAN is only around 100 base pairs. For E.coli, 100 base pairs is totally within its working capacity. Therefore, E.coli can be a low-cost PBAN factory. By transforming the DNA sequences for different PBAN into the E.coil, we can even gain a variety of PBANs. 　

3. Secreted directly: Because PBAN is secreted by the insect itself, the insect would not form a resistance to it compare to use pesticide.

Together, using PBAN is totally a environmental friendly way for solving harmful insects problems with easily triggering pheromone production by contacting with its receptor.

See our expanding PBAN(Agrotis ipsilonr) parts collection: Pcons+B0034+PBAN(Agrotis ipsilon) and Pcons+B0034+PBAN(Agrotis ipsilon)+B0034+BFP+J61048

Fig.1-2 Working mechanism of PBAN

Target insect: Cotton bollworm (Agrotis ipsilon)

Fig.2-1 Introduction of Agrotis ipsilonr

The experiment of PBAN

Fig.2-2 The PCR result of the PBAN-AI. The DNA sequence length of PBANs are around 100～150 bp, so the PCR products should appear at 415～515 bp.

After receiving the DNA sequences from the gene synthesis company, we recombined each PBAN gene to PSB1C3 backbones and conducted a PCR experiment to check the size of each of the PBANs. The DNA sequence length of the PBAN are around 100～150 bp. In this PCR experiment, the PBAN products size should be near at 415～515 bp. The Fig.2-2 showed the correct size of the PBAN, and proved that we successful ligated the PBAN DNA sequence onto an ideal backbone.

Fig.2-3 The plate of part-PBAN(Agrotis ipsilon)

Peptide Sequence： LADDTPATPADQEMYRPDPEQIDSRTKYFSPRL