Ib hom protein pom nyob rau epithelial cells, uas kab sab hauv thiab sab nraud ntawm lub cev. Keratin pab tsim cov ntaub so ntswg ntawm cov plaub hau, rau tes, thiab txheej txheej ntawm daim tawv nqaij. Lawv kuj pom muaj nyob rau ntawm cov hlwb hauv ob sab hauv ntawm lub cev, cov qog, thiab lwm qhov hauv lub cev.
Keratin feem ntau pom nyob qhov twg?
7.3.
Keratin yog suav tias yog cov khoom lag luam muaj protein ntau tshaj plaws hauv ntiaj teb. Nws feem ntau pom nyob rau hauv cov hlwb epithelial ntawm cov vertebrates siab dua thiab muaj cov ntsiab lus protein ntau tshaj plaws. Keratin muaj nyob rau hauv ntau hom xws li α-keratin thiab β-keratin.
Dab tsi ntawm daim tawv nqaij pom keratin?
Epidermis : Txheej txheejCov epidermis kuj muaj ntau hom hlwb: Keratinocytes, uas tsim cov protein hu ua keratin, cov khoom tseem ceeb ntawm cov epidermis..
Keratin nyob qhov twg thiab nws tsim li cas?
Lawv tsim cov plaub hau (xws li ntaub plaub), txheej txheej ntawm daim tawv nqaij, horns, rau tes, claws thiab hooves ntawm cov tsiaj nyeg thiab cov slime threads ntawm hagfish. Keratin filaments muaj ntau nyob rau hauv keratinocytes nyob rau hauv lub hornified txheej ntawm lub epidermis; Cov no yog cov proteins uas tau dhau los ua keratinization.
keratin loj hlob los ntawm qhov twg?
Cov plaub hau loj hlob los ntawm kev tsim cov hlwb tshiab ntawm lub hauv paus ntawm cov hauv paus hniav. Cov hlwb no sib ntxiv los ua ib tug pas nrig ntawm cov ntaub so ntswg hauv daim tawv nqaijCov pas nrig ntawm cov hlwb txav mus rau ntawm daim tawv nqaij raws li cov hlwb tshiab tsim hauv qab lawv. Thaum lawv txav mus los, lawv raug txiav tawm ntawm lawv cov khoom noj thiab pib tsim cov protein nyuaj hu ua keratin.
