MyD88 Inhibitory Peptide

Pepinh-MYD is a 26 aa peptide that blocks MyD88 signaling by inhibiting its homodimerization through binding. Pepinh-MYD contains a sequence from the MyD88 TIR homodimerization domain (RDVLPGT) [1] preceeded by a protein transduction sequence (RQIKIWFQNRRMKWKK) derived from antennapedia which enables the peptide to translocate through the cell membrane [2]. Pepinh-MYD is provided with Pepinh-Control, a control peptide [3].


Working concentration: 5-50 μM
Endotoxin level:
<0.125 EU/mg
>95% (HPLC)
Species reactivity:
Human, mouse

Pepinh-MYD:    RQIKIWFQNRRMKWKK-RDVLPGTCVNS-NH2 (MyD88 homodimerization sequence is underlined)

Molecular weights:
Pepinh-MYD: 3430
Pepinh-Control: 3812


• 2 mg of lyophilized Pepinh-MYD
• 2 mg of lyophilized Pepinh-Control
• 2x1.5 ml endotoxin-free water

Pepinh-MYD is provided as a white solid and shipped at room temperature. Store at -20°C. Solid product is stable 1 year at -20°C. Upon resuspension, Pepinh-MYD should be aliquoted and stored at -20°C. Avoid repeated freeze-thaw cycles. Resuspended product is stable for 6-8 months at -20°C when properly stored.


1. loiarro M. et al., 2005. Peptide-mediated Interference of TIR Domain Dimerization in MyD88 Inhibits Interleukin-1-dependent Activation of NF-{kappa}B. J. Biol. Chem., 280: 15809-14.
2. Derossi D. et al., 1994. The third helix of the Antennapedia homeodomain translocates through biological membranes. J. Biol. Chem., 269: 10444-50.
3. Toshchakov V. et al., 2005. Differential Involvement of BB Loops of Toll-IL-1 Resistance (TIR) Domain-Containing Adapter Proteins in TLR4- versus TLR2-Mediated Signal Transduction. J. Immunol., 175: 494 - 500.



Description MyD88 inhibitory peptide
Cat. Codetlrl-pimyd
Unit Size2 mg
Price For price or distributor address,
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