In sequence terms, that Cterminal block is exactly the kind of motif that enables membrane penetration, The region: ArgArgSerGlyGlyLysArgProProProArgArgArgGlnArgArgLysLysArgGlyOH` has all the hallmarks of a CPP: High local positive charge density Arginine is the key driver the guanidinium group forms bidentate hydrogen bonds with phosphate and sulfate groups on the cell surface (heparan sulfate proteoglycans, phospholipid headgroups)
DOI:10.4049/jimmunol.170.11.5583 7.Christophers.E, Henseler.T, Contrasting disease patterns in psoriasis and atopic dermatitis
Every batch of Cagrilintide is HPLC-tested to 99%+ purity, held in UK stock, dispatched same-day and supplied with a batch-specific Certificate of Analysis for laboratory research use only
Maybe you cannot remember if you left it out
However, the delivery method is just as important as the tripeptide itself
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