I-L-Tyrosine Powder
i-l-tyrosine
isingeniso esifushane
I-Tyrosine (efushaniswe ngokuthi i-Tyr noma i-Y) noma i-4-hydroxyphenylalanine ingenye yama-amino acid angu-22 asetshenziswa amaseli ukuhlanganisa amaprotheni. Ingasetshenziswa ukuhlanganisa amaprotheni kumaseli, nge-codons UAC kanye ne-UAU. Iyi-amino acid engabalulekile equkethe amaqembu aseceleni kwe-polar futhi ingakhiwa ngumzimba womuntu. Igama elithi 'tyrosine' livela kwelesiGriki elithi tyros, elisho ushizi. Ekuqaleni kwekhulu le-19, yatholwa okokuqala ngusokhemisi waseJalimane u-Eustus von Libich kushizi we-casein, futhi uma isetshenziswa njengeqembu elisebenzayo noma eliseceleni, ibizwa ngokuthi i-tyrosine.
umsebenzi
Ngaphezu kokuba yi-amino acid yeprotheni, i-tyrosine idlala indima ekhethekile ekudlulisweni kwesignali kumaprotheni ngokuthembela kumaqembu asebenzayo e-phenolic. Umsebenzi wayo uwukwamukela amaqembu e-phosphate adluliselwa yi-protein kinase (okuthiwa ama-receptor e-tyrosine kinase), kuyilapho i-phosphorylation yamaqembu e-hydroxyl ishintsha umsebenzi weprotheni eqondiwe.
I-Tyrosine idlala indima ebalulekile ku-photosynthesis, isebenza njengomhlinzeki we-electron ekwehliseni ukusabela kwe-chlorophyll e-oxidized kuma-chloroplast (i-Photosystem II), ukususwa kwe-protonation kwamaqembu e-phenolic OH, futhi ekugcineni incishiswe ngamaqoqo amane e-manganese ayinhloko ku-Photosystem II.
Imithombo yokudla
I-Tyrosine ingakhiwa kusuka ku-phenylalanine emzimbeni futhi ingatholakala ekudleni okuningi okunamaprotheni amaningi njengenkukhu, i-turkey, inhlanzi, ubisi, i-yogurt, ushizi, ushizi, amantongomane, ama-alimondi, imbewu yethanga, i-sesame, ubhontshisi, ubhontshisi bama-lima, ama-avokhado, kanye nobhanana.
I-L-tyrosine iyi-amino acid engabalulekile futhi ingenye yezinto ezibalulekile endleleni yokuguqulwa kwe-methionine. Itholakala kabanzi ezintweni eziphilayo futhi idlala indima ebalulekile ezinqubweni eziningi zezinto eziphilayo.
I-L-tyrosine iyisakhi samaprotheni futhi ihlanganyela enqubweni yokwenziwa kwamaprotheni. Iphinde ibe yisandulela sezinto ezahlukahlukene ezisebenzayo, okuhlanganisa ama-neurotransmitter e-catecholamine njenge-dopamine, i-norepinephrine, ne-adrenaline, kanye nama-hormone e-thyroid kanye ne-melanin.
Ngaphezu kwalokho, i-L-tyrosine nayo ihilelekile ekwakhiweni kwama-molecule abalulekile ebhayoloji ngokusebenzisa uchungechunge lwama-enzyme emzimbeni, njenge-tyrosine kinase kanye ne-tyrosine hydroxylase, ahilelekile ezindleleni zokubonisana ze-kinase kanye nokulawulwa kwe-physiological.
Ukudla i-L-tyrosine kungatholakala ngokudla, ngemithombo yokudla eminingi ehlanganisa amantongomane, imbewu, inyama, inhlanzi, nemikhiqizo yobisi. Ngaphezu kwalokho, i-L-tyrosine ingaguqulwa isuke kwenye i-amino acid, i-phenylalanine, ngendlela yokwenziwa kwe-tyrosine emzimbeni.
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