Peptide yog dab tsi?

Peptide yog hais txog ib hom kev sib xyaw uas nws cov qauv molecular ntawm cov amino acid thiab cov protein, Nws yog tsim los ntawm 20 hom natural amino acids nyob rau hauv sib txawv compositions thiab kev npaj, los ntawm dipeptides mus rau complex linear los yog voj qauv polypeptides.Txhua peptide muaj lawv tus kheej cov qauv, thiab cov qauv ntawm peptides sib txawv nyob ntawm lawv tus kheej txoj haujlwm.Peptide muaj cov ntsiab lus hauv lub cev lom neeg, tab sis nws muaj qhov tshwj xeeb ntawm lub cev.Ntawm lawv, peptides uas tuaj yeem tswj hwm lub cev ua haujlwm ntawm lub cev uas hu ua kev ua haujlwm peptide lossis biologically nquag peptide.Thaum ntxov 20^thxyoo pua, txoj kev vam meej ntawm chemically synthesize dipeptide kos npe rau cov tsos ntawm peptide science.

Ntau qhov tseeb ua pov thawj tias cov protein tsis tuaj yeem nqus tau hauv daim ntawv ntawm cov amino acid, tab sis kuj nqus tau ntau hom peptides.Nws feem ntau ntseeg tau tias cov dipeptides thiab tripeptides tau nqus mus rau hauv cov hnyuv thiab tom qab ntawd hydrolyzed los ntawm peptidase kom nkag mus rau hauv cov ntshav ncig hauv daim ntawv ntawm cov amino acids dawb.Cov neeg nqa khoom peptide nkag mus rau hauv kev ncig.

Kev tshawb fawb ntxiv pom tias cov protein uas tau noj los ntawm tib neeg lub cev tau zom thiab nqus tau hauv daim ntawv ntawm oligopeptides tom qab kev ua haujlwm ntawm cov enzymes hauv plab hnyuv, thiab qhov feem ntawm kev nqus ntawm cov amino acids dawb yog tsawg heev.

Protein yog absorbed nyob rau hauv daim ntawv ntawm peptide, uas tsis tsuas yog zam kev sib tw ntawm cov amino acids, tab sis kuj txo cov nyhuv rov qab ntawm siab osmotic siab ntawm tib neeg lub cev.Yog li, muab cov khoom noj khoom haus rau tib neeg lub cev hauv daim ntawv ntawm peptide yog qhov zoo rau kev ua haujlwm sai ntawm peptide.Dab tsi ntxiv, cov khoom siv roj ntsha thiab cov khoom noj muaj txiaj ntsig ntawm peptide yog siab dua cov amino acids dawb.Yog li ntawd, collagen peptide tau dhau los ua qhov chaw kub tshiab hauv kev tshawb fawb txog kev noj zaub mov protein, thiab me me molecular peptide los yog oligopeptide ua cov zaub mov noj qab haus huv ntawm qhov ncauj muaj kev tshawb fawb.