Qhov no yog vim lawv muaj tag nrho cov nqi ntawm lawv cov pab pawg ntawm pawg ntawm lub cev pH. … Histidine kuj suav hais tias yog qhov yooj yim tab sis nws tuaj yeem muaj qhov zoo lossis qhov nruab nrab ntawm nws cov pab pawg sab nraud ntawm lub cev pH. Qhov no yog vim histidine's side chain muaj pKa tus nqi ntawm 6.0.
Dab tsi ua rau histidine yooj yim?
Ntawm pH qis dua rau lawv cov pK, lysine, arginine thiab histidine sab chains lees txais ib qho H + ion (proton) thiab raug them zoo. Lawv yog li ntawd yooj yim.
Puas yog histidine yooj yim lossis acidic?
Muaj peb cov amino acids uas muaj basic sab chains ntawm nruab nrab pH. Cov no yog arginine (Arg), lysine (Lys), thiab histidine (Nws). Lawv sab chains muaj nitrogen thiab zoo li ammonia, uas yog lub hauv paus.
Vim li cas histidine tsawg dua li arginine?
Arginine yog qhov yooj yim tshaj plaws ntawm lawv vim nws muaj guanidine sab pawg, −(CH2)4NHC(=NH)NH2, uas yog qhov yooj yim. Lysine muaj ob pawg amine, uas ua rau nws tag nrho cov ntsiab lus vim yog ob pawg amine cais (−(CH2)4NH2). Histidine, ntawm qhov tod tes, muaj imidazole pawg, uas tseem yog qhov yooj yim.
Puas yog histidine pib ntawm ph7?
Hav sawv daws, hauv kuv phau ntawv biochem Histidine yog muab +1 nqi ntawm pH 7 los yog lub cev pH (7.4).
