1. Enter PEFT-SP tool (you are here).
2. Enter protein sequences in FASTA format in the text area.
3. Click on the "Submit" button.
Example outputs:
The example below shows the output for protein with Sec signal peptide. The table shows likelihood of predicted signal peptide. The predicted signal peptide is one of follow:
Sec signal peptide (Sec/SPI)
Lipoprotein signal peptide (Sec/SPII)
Tat signal peptide (Tat/SPI)
Tat lipoprotein signal peptide (Tat/SPII)
Pilin signal peptide (Sec/SPIII)
No signal peptide at all (Other)
If a signal peptide is predicted, the cleavage site position is shown as a vertical line in the plot. The positions of the following regions are predicted by the model:
n-region: The basic region in N-terminal of the signal peptide for Sec/SPI, Sec/SPII, Tat/SPI, and Tat/SPII. Regions are labeled as N.
h-region: The hydrophobic region of the signal peptide for Sec/SPI, Sec/SPII, Tat/SPI and Tat/SPII. Regions are labeled as H.
c-region: The polar region in C-terminal region of the signal peptide for Sec/SPI and Tat/SPI. Regions are labeled as C.
Twin-arginine motif: The twin-arginine (R-R) motif at the end of the N-region for Tat signal peptides. Regions are labeled as R.
Sec/SPIII: These signal peptides have no known region structure.