L-Cysteine (CAS# 52-90-4)
| Alamomin haɗari | Xn - cutarwa |
| Lambobin haɗari | R22 - Yana cutarwa idan an haɗiye shi R36 / 37/38 - Haushi ga idanu, tsarin numfashi da fata. |
| Bayanin Tsaro | S26 - Idan ana hulɗa da idanu, kurkura nan da nan da ruwa mai yawa kuma ku nemi shawarar likita. S37/39 - Sanya safofin hannu masu dacewa da kariya / ido |
Gabatarwa
L-cysteine (L-Cysteine) amino acid ne mara mahimmanci, wanda codons UGU da UGC suka sanya su, kuma amino acid ne mai ɗauke da sulfhydryl. Saboda kasancewar ƙungiyoyin sulfhydryl, yawan gubarsa kaɗan ne, kuma a matsayin antioxidant, zai iya hana haɓakar radicals kyauta. & & L-cysteine amino acid ne wanda ba shi da mahimmanci a zahiri. Shi mai kunnawa NMDA ne. Hakanan yana taka rawa da yawa a al'adar tantanin halitta, kamar haka: 1. Protein synthesis substrate; Rukunin sulfhydryl a cikin cysteine yana taka muhimmiyar rawa wajen samar da haɗin gwiwar disulfide, kuma yana da alhakin nadewa na sunadaran, haɓakar sifofin sakandare da na uku. 2. Acetyl-CoA kira; 3. kare sel daga danniya na oxidative; 4. shine babban tushen sulfur a al'adun tantanin halitta; 5. Karfe ionophore. & & Ayyukan Halittu: Cysteine polar α-amino acid ne mai ɗauke da ƙungiyoyin sulfhydryl a cikin rukunin aliphatic. Cysteine amino acid ne mai mahimmanci da amino acid saccharogenic ga jikin mutum. Ana iya canza shi daga methionine (methionine, amino acid mai mahimmanci ga jikin mutum) kuma ana iya canza shi zuwa cystine. Bazuwar cysteine ya lalace cikin pyruvate, hydrogen sulfide da ammonia ta hanyar aikin desulphurase a ƙarƙashin yanayin anaerobic, ko ta hanyar transamination, matsakaicin samfurin β-mercaptopyruvate ya lalace cikin pyruvate da sulfur. A karkashin yanayi na iskar shaka, bayan an sanya shi zuwa cysteine sulfurous acid, ana iya rushe shi zuwa pyruvate da sulfurous acid ta hanyar transamination, kuma ya zama taurine da taurine ta hanyar decarboxylation. Bugu da ƙari, cysteine wani fili ne mara ƙarfi, mai sauƙin sakewa, kuma yana canzawa tare da cystine. Hakanan za'a iya haɗa shi tare da mahadi masu kamshi mai guba don haɗa acid mercapturic don lalata. Cysteine wani wakili ne mai ragewa, wanda zai iya inganta samuwar gluten, rage lokacin da ake buƙata don haɗuwa da makamashi da ake buƙata don amfani da magani. Cysteine yana raunana tsarin sunadaran ta hanyar canza haɗin disulfide tsakanin kwayoyin furotin da cikin kwayoyin sunadaran, ta yadda furotin ya miƙe.
