Lub melting kub txawv rau cov proteins sib txawv, tab sis kub siab tshaj 41 ° C (105.8 ° F) yuav rhuav tshem cov kev sib cuam tshuam hauv ntau cov proteins thiab ua rau lawv. Qhov ntsuas kub no tsis yog siab dua li lub cev kub ib txwm (37 ° C lossis 98.6 ° F), yog li qhov tseeb no qhia tau tias ua npaws txaus ntshai npaum li cas.
Cov proteins twg tuaj yeem ua kom sov tau?
Feem ntau cov proteins yog denatured los ntawm kev kho cua sov, thiab cov txheej txheem feem ntau yog irreversible. Txawm li cas los xij, qee cov proteins, xws li hyperthermophilic proteins paub tias ruaj khov txawm tias kub kub ntawm dej.
Yuav ua li cas cov protein denatured nyob rau hauv siab?
Heat tuaj yeem siv los cuam tshuam hydrogen bonds thiab tsis yog-polar hydrophobic kev cuam tshuam. Qhov no tshwm sim vim tias tshav kub ua rau lub zog kinetic thiab ua rau cov molecules vibrate sai heev thiab ua rau cov ntawv cog lus cuam tshuam. Cov proteins hauv qe denature thiab coagulate thaum ua noj.
YPob proteins denature ntawm 40 degrees?
Lub pib kub yog kwv yees li 40 degrees C, tab sis qee qhov kev hloov pauv tuaj yeem txuas ntxiv mus qis li 37-38 degrees C. Ntxiv rau kev ua raws li cov teeb liab tseem ceeb rau kev sib txuas ntawm cov protein ua kom sov., qhov tsis ua haujlwm ntawm cov protein tseem ceeb tuaj yeem ua rau cell tuag.
Puas yog cov proteins uas muaj qhov kub thiab txias?
Proteins undergo txias thiab kub denaturation, tab sis feem ntau txias denaturation tsis tuaj yeem ua taukuaj pom vim nws tshwm sim ntawm qhov kub thiab txias hauv qab dej khov. Proteins tab tom nrhiav tau txias thiab kub denaturation yield ib tug txhim khu kev qha nkhaus ntawm protein stability.
