L-Valine
Kev Taw Qhia
L-valine yog ib qho amino acid uas muaj ceg, uas lub cev tsiaj tsis tuaj yeem tsim tau. Nws yuav tsum tau noj los ntawm cov khoom noj txhua hnub kom tau raws li nws cov kev xav tau kev noj haus, yog li nws yog ib qho amino acid tseem ceeb. Amino acids yog cov qauv tseem ceeb ntawm kev tsim cov protein, cov amines ua ntej ntawm lwm cov amines uas xav tau rau kev ua haujlwm ntawm lub cev, thiab yog cov khoom tseem ceeb rau lub neej. Tam sim no, muaj 20 txog 30 cov amino acids paub, qee qhov tuaj yeem tsim tau hauv tib neeg lub cev thiab hu ua cov amino acids tsis tseem ceeb, thiab qee qhov tsis tuaj yeem tsim tau hauv tib neeg lub cev thiab yuav tsum tau ntxiv los ntawm sab nraud, hu ua cov amino acids tseem ceeb.
Cov khoom siv tshuaj lom neeg
L-valine tseem hu ua 2-amino-3-methylbutyric acid, nrog rau cov tshuaj lom neeg C5H11NO2. Ib qho siv lead ua dawb monoclinic lossis hmoov crystalline, uas rov ntxuav nrog cov kua dej ntawm ethanol, yog ib qho tsis muaj xim lossis scaly siv lead ua. Tsis muaj ntxhiab thiab muaj qhov saj iab tshwj xeeb. Lub ntsiab lus yaj yog li 315 ℃. Nws yooj yim yaj hauv dej, cov kua dej yog acidic, thiab tus nqi PH ntawm 5% kua dej yog 5.5 ~ 7.0. Yuav luag tsis yaj hauv ethanol thiab ether. Nws ruaj khov rau cua sov, lub teeb thiab huab cua. Nws nyuaj rau cais los ntawm leucine.
SIV
L-Valine yog ib qho amino acid tseem ceeb rau tib neeg lub cev, uas yog siv rau hauv kev tshawb fawb biochemical, kev npaj cov ntaub so ntswg kab lis kev cai, thiab cov tshuaj amino acid. Cov khoom noj khoom haus tonic tuaj yeem siv ua cov khoom tseem ceeb ntawm amino acid infusion thiab kev npaj cov kua qaub raws li ammonia tshuaj. L-valine yog ib qho ntawm peb cov amino acids branched-chain. Nws yog ib qho amino acid tseem ceeb, uas tuaj yeem kho qhov ua tsis tau zoo ntawm daim siab thiab kev ua haujlwm tsis zoo ntawm lub paj hlwb.
