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This is a peptide containing 12 functional amino acids from the amino terminus of the neuropeptide galanin and mastoparan in the carboxyl terminus, connected via a lysine. Transportan is a cell-penetrating peptide as judged by indirect immunofluorescence using N epsilon13-biotinyl-transportan. TP reveals some characteristic features of both galanin and mastoparan since it inhibits the binding of galanin to GALR-1 receptor as well as modulates the activity of G proteins due to the inhibition of GTPase activity.
Freely soluble in water. Avoid repeated freezing and thawing.