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.
Cov tawv nqaij keratin pom dab tsi?
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 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.
YPuas keratin pom nyob rau hauv dermis?
Lub stratum corneum, thib tsib, txheej txheej sab nraud yog tuab nrog kab ntawm cov hlwb tuag. Cov hlwb no muaj soft keratin, uas ua rau daim tawv nqaij elastic thiab tiv thaiv cov hlwb hauv qab los ntawm ziab tawm. Lub dermis, hu ua "cov tawv nqaij tiag," yog txheej hauv qab daim tawv nqaij.
YKeratin hauv epidermis yog dab tsi?
Keratin yog ib qho tseem ceeb ntawm cov protein nyob hauv daim tawv nqaij Keratin muaj ob lub luag haujlwm tseem ceeb: ua kom cov hlwb sib txuas thiab tsim cov txheej txheem tiv thaiv sab nraud ntawm daim tawv nqaij. Hauv cov hlwb epithelial, keratin proteins hauv lub cell txuas rau cov proteins hu ua desmosomes ntawm qhov chaw.