Upfu hweL-Tyrosine
l-tyrosine
sumo pfupi
Tyrosine (yakapfupikiswa seTyr kana Y) kana 4-hydroxyphenylalanine ndeimwe yemaamino acid makumi maviri nemaviri anoshandiswa nemasero kugadzira mapuroteni. Inogona kushandiswa kugadzira mapuroteni mumasero, necodons UAC neUAU. Iamino acid isingakoshi ine mapoka emativi epolar uye inogona kugadzirwa nemuviri wemunhu. Izwi rekuti 'tyrosine' rinobva kuGreek tyros, zvichireva chizi. Mukutanga kwezana remakore rechi19, yakatanga kuwanikwa nenyanzvi yemakemikari yekuGermany Eustus von Libich mu casein cheese, uye kana ikashandiswa seboka rinoshanda kana repadivi, inonzi tyrosine.
basa
Pamusoro pekuva protein amino acid, tyrosine ine basa rakakosha mukufambiswa kwemashoko mumapuroteni nekushandisa mapoka anoshanda ephenolic. Basa rayo nderekugamuchira mapoka ephosphate anotamiswa nemaprotein kinases (anonzi tyrosine kinase receptors), ukuwo phosphorylation yemapoka ehydroxyl ichichinja mashandiro eprotein yakanangana nayo.
Tyrosine inoitawo basa rakakosha mu photosynthesis, ichibatsira mukuderedza chlorophyll mu chloroplasts (Photosystem II), kubvisa protonation ye phenolic OH groups, uye pakupedzisira kuderedza ne ma core manganese clusters mana mu Photosystem II.
Zvokudya zvinobva kumarudzi akasiyana siyana
Tyrosine inogona kugadzirwa kubva kuphenylalanine mumuviri uye inowanikwa muzvikafu zvakawanda zvine mapuroteni akawanda zvakaita sehuku, kakuni, hove, mukaka, yogati, chizi, chizi, nzungu, maarumondi, mhodzi dzemanhanga, sesame, soya, nyemba dzelima, avocado, nemabhanana.
L-tyrosine iamino acid isingakoshi uye chimwe chezvinhu zvakakosha mumethionine metabolism. Inowanikwa zvakanyanya muzvisikwa uye inoita basa rakakosha mumabasa akawanda ehupenyu.
L-tyrosine chikamu chemapuroteni uye inobata basa rekugadzira mapuroteni. Inobatsirawo pakugadzirwa kwezvinhu zvakasiyana-siyana zvinogadzira hupenyu, zvinosanganisira catecholamine neurotransmitters dzakadai sedopamine, norepinephrine, uye adrenaline, pamwe nemahormone ethyroid nemelanin.
Pamusoro pezvo, L-tyrosine inobatanidzwawo mukugadzirwa kwemamorekuru akakosha ebhayoloji kuburikidza nema enzymes akawanda mumuviri, akadai se tyrosine kinase uye tyrosine hydroxylase, ayo anobatanidzwa mukufamba kwekinase uye kutonga kwemuviri.
Kudya L-tyrosine kunogona kuwanikwa kuburikidza nekudya, kune chikafu chakawanda chinosanganisira nzungu, mbeu, nyama, hove, uye zvigadzirwa zvemukaka. Pamusoro pezvo, L-tyrosine inogonawo kushandurwa kubva kune imwe amino acid, phenylalanine, kuburikidza nenzira yekugadzira tyrosine mumuviri.
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