Ntụ ntụ L-Tyrosine
l-tyrosine
okwu mmeghe dị mkpirikpi
Tyrosine (nke a kpọrọ Tyr ma ọ bụ Y) ma ọ bụ 4-hydroxyphenylalanine bụ otu n'ime amino asịd iri abụọ na abụọ nke mkpụrụ ndụ ji emepụta protein. Enwere ike iji ya mepụta protein n'ime mkpụrụ ndụ, yana codons UAC na UAU. Ọ bụ amino asịd na-adịghị mkpa nke nwere otu akụkụ polar ma ahụ mmadụ nwere ike ịmepụta ya. Okwu ahụ bụ 'tyrosine' sitere na tyros nke Grik, nke pụtara cheese. Na mmalite narị afọ nke 19, ọ bụ ọkachamara sayensị German bụ Eustus von Libich chọtara ya na mbụ na cheese casein, mgbe ejiri ya mee ihe dị ka otu ọrụ ma ọ bụ otu akụkụ, a na-akpọ ya tyrosine.
ọrụ
Tinyere ịbụ amino acid protein, tyrosine na-arụ ọrụ pụrụ iche na mgbanwe mgbaàmà na protein site na ịdabere na otu ọrụ phenolic. Ọrụ ya dị ka ihe nnata maka otu phosphate nke protein kinases (nke a na-akpọ tyrosine kinase receptors) na-ebufe, ebe phosphorylation nke otu hydroxyl na-agbanwe ọrụ nke protein ahụ.
Tyrosine na-arụkwa ọrụ dị mkpa na photosynthesis, na-eje ozi dị ka onye na-enye eletrọn na mbelata mmeghachi omume nke chlorophyll oxidized na chloroplasts (Photosystem II), mwepụ nke otu phenolic OH, na n'ikpeazụ mbelata site na mkpokọta manganese anọ dị na Photosystem II.
Isi mmalite nri
Enwere ike iji phenylalanine mepụta Tyrosine n'ime ahụ, a pụkwara ịchọta ya n'ọtụtụ nri protein dị elu dịka ọkụkọ, toki, azụ, mmiri ara ehi, yogọt, chiiz, chiiz, ahụekere, almọnd, mkpụrụ ugu, sesame, soybean, agwa lima, avocado, na unere.
L-tyrosine bụ amino acid na-adịghị mkpa, ọ bụkwa otu n'ime ihe ndị dị mkpa na usoro metabolism methionine. Ọ dị n'ọtụtụ ihe dị ndụ ma na-arụ ọrụ dị mkpa na ọtụtụ usoro bayoloji.
L-tyrosine bụ akụkụ nke protein ma na-esonye na usoro mmepụta nke protein. Ọ bụkwa ihe na-ebute ụzọ nke ihe dị iche iche na-arụ ọrụ na bioactive, gụnyere catecholamine neurotransmitters dị ka dopamine, norepinephrine, na adrenaline, yana homonụ thyroid na melanin.
Tinyere nke ahụ, L-tyrosine na-etinyekwa aka na mmepụta nke mkpụrụ ndụ ihe dị ndụ dị mkpa site na usoro enzymes dị n'ime ahụ, dị ka tyrosine kinase na tyrosine hydroxylase, nke na-etinye aka na ụzọ mgbaàmà kinase na nhazi physiological.
Enwere ike inweta L-tyrosine site na nri, yana ọtụtụ nri dị iche iche gụnyere mkpụrụ, mkpụrụ, anụ, azụ, na ngwaahịa mmiri ara ehi. Na mgbakwunye, enwere ike ịgbanwe L-tyrosine site na amino acid ọzọ, phenylalanine, site na ụzọ mmepụta tyrosine dị n'ahụ.
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