Kodi peptide ndi chiyani?

Peptide imatanthawuza mtundu wapawiri womwe mamolekyu ake amakhala pakati pa amino acid ndi mapuloteni, amapangidwa ndi mitundu 20 ya ma amino acid achilengedwe m'mapangidwe osiyanasiyana, kuyambira ma dipeptides kupita ku ma polypeptides ozungulira kapena ozungulira.Peptide iliyonse ili ndi mawonekedwe akeake, ndipo mapangidwe a peptides osiyanasiyana amadalira ntchito yawo.Peptide ili ndi zomwe zili m'thupi lachilengedwe, koma imakhala ndi zochitika zapadera za thupi.Mwa iwo, ma peptides omwe amatha kuwongolera magwiridwe antchito amthupi omwe amatchedwa peptide yogwira ntchito kapena peptide yogwira biologically.Kumayambiriro kwa 20^thm'zaka za zana, kupambana kwa mankhwala synthesize dipeptide chizindikiro maonekedwe a peptide sayansi.

Zambiri zimatsimikizira kuti mapuloteni samangotenga mawonekedwe a amino acid, komanso amayamwa mitundu yambiri ya peptides.Nthawi zambiri amakhulupirira kuti ma dipeptides ndi tripeptides amalowetsedwa m'maselo am'mimba kenako amalowetsedwa ndi peptidase kuti alowe m'magazi ngati ma amino acid aulere.Wonyamula peptide amalowa m'magazi.

Kafukufukuyu adapezanso kuti puloteni yomwe imalowetsedwa ndi thupi la munthu imagayidwa ndikulowa mu mawonekedwe a oligopeptides pambuyo pochita ma enzymes m'matumbo am'mimba, ndipo gawo la kuyamwa kwa ma amino acid aulere ndilochepa kwambiri.

Mapuloteni amalowetsedwa mu mawonekedwe a peptide, omwe samangopewa mpikisano pakati pa amino acid, komanso amachepetsanso zotsatira za kupsinjika kwakukulu kwa osmotic pathupi la munthu.Chifukwa chake, perekani zinthu zopatsa thanzi ku thupi la munthu ngati peptide ndizabwino kuti mugwiritse ntchito mphamvu ya peptide mwachangu.Kuphatikiza apo, ma biological valence ndi phindu lazakudya la peptide ndilapamwamba kuposa ma amino acid aulere.Chifukwa chake, collagen peptide yakhala malo otentha atsopano pantchito yofufuza zakudya zama protein, ndipo peptide yaying'ono yamamolekyulu kapena oligopeptide imapangitsa kuti chakudya chamkamwa chikhale ndi thanzi labwino.