Part:BBa_K4165141

MMD3 Peptide

Tau binding peptide targeting the PHF seed of Tau

Usage and Biology

MMD3 peptide sequence is DPLKARHTSVWY, it is the D-enantiomeric peptide of MM3 (BBa_K4165154). It binds to 275-VQIINK-280 (PHF*) and 306-VQIVYK-311 (PHF) motifs of tau that are reported to drive tau paired helical filament aggregates. it inhibits formation of PHF6* and full‐length Tau aggregates, but not PHF driven aggregates, and prevents the formation of tau β‐sheet‐rich fibrils.

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]

Dry Lab

Modeling

MMD3 is modeled by AlphaFold2, Apptest and ITASSER, best model obtained from Apptest.

                            Figure 1.: Predicted 3D structure of Synthetic peptide MMD3.

Table 1: Quality assessment parameters of MMD3 model.

References

1. Malhis, M., Kaniyappan, S., Aillaud, I., Chandupatla, R. R., Ramirez, L. M., Zweckstetter, M., ... & Funke, S. A. (2021). Potent Tau Aggregation Inhibitor D‐Peptides Selected against Tau‐Repeat 2 Using Mirror Image Phage Display. ChemBioChem, 22(21), 3049-3059.