Description:
AAsequence: Tyr-Pro-Phe-Pro-NH2
Length(aa): 4
Formula: C28H35N5O5
Molecularweight: 521.64Da
Appearance: Whitelyophilizedsolid
Solubility: waterandsalinebuffer
CASnumber: 87777-29-5
Source: Synthetic
Purityrate: >97%
Reference:
Morphiceptin(NH4-tyr-pro-phe-pro-COHN2):apotentandspecificagonistformorphine(mu)receptors
ThesyntheticpeptideNH2-Tyr-Pro-Phe-Pro-CONH2(morphiceptin),whichistheamideofafragmentofthemilkproteinbeta-casein,hasmorphinelikeactivitiesandishighlyspecificformorphine(mu)receptorsbutnotforenkephalin(delta)receptors.Itisasactiveasmorphineintheguineapigileumbutmuchlessactiveinthemouseandratvasdeferens.Thediscoveryofthisspecificmorphinereceptorligandsubstantiatesthehypothesisofmultipleopiatereceptors.Theligand,whichmaybeofphysiologicalsignificancesinceaverysimilar,oridentical,activitycanbedetectedinenzymaticdigestsofbeta-casein,mayproveusefulforfurtherinvestigationofthefunctionsofopiatereceptorsubtypes.
ChangKJetal.Morphiceptin(NH4-tyr-pro-phe-pro-COHN2):apotentandspecificagonistformorphine(mu)receptors. Science. PMID: 6259732