Kweli phepha, i-amino acids ezimbini ezisisiseko, i-glycine (Gly) kunye ne-alanine (i-Ala), ziyaziswa.Oku kungenxa yokuba banokusebenza njengesiseko se-amino acids kwaye ukongeza amaqela kubo kunokuvelisa ezinye iintlobo zee-amino acids.
I-Glycine inencasa ekhethekileyo, ngoko ke igama layo lesiNgesi livela kwi-Glykys yesiGrike (eswiti).Inguqulelo yesiTshayina ye-glycine ayinayo kuphela intsingiselo ye "sweet", kodwa iphinda ibe nokubiza okufanayo, okunokuthiwa yimodeli "yokuthembeka, impumelelo kunye nobuhle".Ngenxa yokunambitheka kwayo okumnandi, i-glycine isetyenziswa rhoqo njenge-flavoring agent kwishishini lokutya ukususa ubukrakra kunye nokwandisa ubumnandi.Ikhonkco elisecaleni le-glycine lincinci kunye ne-athomu enye ye-hydrogen.Loo nto imenza ahluke.Yisiseko se-amino acid ngaphandle kwe-chirality.
I-Glycine kwiiprotheni ibonakala ngobukhulu bayo obuncinci kunye nokuguquguquka.Ngokomzekelo, i-helix enemisonto emithathu ehambelana ne-collagen ikhethekileyo kakhulu.Kufuneka kubekho i-glycine enye kuzo zonke iintsalela ezimbini, kungenjalo iya kubangela isithintelo esinzima kakhulu.Ngokufanayo, unxibelelwano phakathi kwemimandla emibini yeprotheni ihlala ifuna i-glycine ukubonelela ukuguquguquka okuhambelanayo.Nangona kunjalo, ukuba i-glycine iguquguquka ngokwaneleyo, ukuzinza kwayo akwanelanga.
I-Glycine yenye yee-spoilers ngexesha lokubunjwa kwe-α-helix.Isizathu kukuba amatyathanga asecaleni mancinci kakhulu ukuba azinzise ukuhambelana kwaphela.Ukongeza, i-glycine ihlala isetyenziselwa ukulungisa izisombululo ze-buffer.Abo kuni benza i-electrophoresis bahlala beyikhumbula loo nto.
Igama lesiNgesi le-alanine livela kwi-acetaldehyde yaseJamani, kwaye igama lesiTshayina kulula ukuliqonda kuba i-alanine ineekhabhoni ezintathu kwaye igama layo lekhemikhali yi-alanine.Eli ligama elilula, njengoko luphawu lwe-amino acid.Ikhonkco elisecaleni le-alanine lineqela elinye kuphela le-methyl kwaye likhulu kancinane kunelo le-glycine.Xa ndazoba iifomyula zezinye ii-amino acid ezili-18, ndongeza amaqela kwi-alanine.Kwiiprotheni, i-alanine ifana nesitena, isiseko esisisiseko esiqhelekileyo esingangqubaniyo nabani na.
Ikhonkco lecala le-alanine linesithintelo esincinci kwaye lifumaneka kwi-α-helix, ehambelanayo.Ikwaqine kakhulu xa isongwe ngo-β.Kubunjineli beprotheyini, ukuba ufuna ukuguqula i-amino acid ngaphandle kwethagethi ethile kwiprotheni, unokuyiguqula ngokubanzi ibe yi-alanine, okungekho lula ukutshabalalisa ukuhambelana okupheleleyo kweprotheni.
Ixesha lokuposa: May-29-2023