2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Proteins yog denatured los ntawm kev kho mob alkaline lossis acid, oxidizing lossis txo cov neeg ua haujlwm, thiab qee cov organic solvents. Txaus siab ntawm cov neeg ua haujlwm denaturing yog cov uas cuam tshuam rau cov qauv theem nrab thiab theem nrab yam tsis muaj kev cuam tshuam rau lub hauv paus qauv.
Cov proteins puas tuaj yeem ua kom sov lossis kua qaub?
Ib qho protein ua denatured thaum nws cov duab ib txwm tau deformedvim tias qee qhov ntawm hydrogen bonds tawg. Tsis muaj zog hydrogen bonds tawg thaum tshav kub heev los yog thaum lawv raug rau cov kua qaub (xws li citric acid los ntawm txiv qaub kua txiv).
Yuav ua li cas 3 yam tuaj yeem tsim cov proteins?
Kub, pH, salinity, polarity ntawm cov kuab tshuaj - cov no yog qee yam uas cuam tshuam rau cov duab ntawm cov protein. Yog tias ib qho lossis kev sib xyaw ua ke ntawm cov xwm txheej no txawv ntawm cov xwm txheej ib txwm ua, cov duab (thiab kev ua haujlwm) ntawm cov protein yuav hloov. Qhov kev hloov pauv no tseem hu ua denatured.
YYuav ua li cas thiaj muaj protein ntau?
Siv cua sov. Thaum tshav kub kub yog ib txoj hauv kev yooj yim tshaj plaws thiab feem ntau txoj hauv kev los denature protein. Thaum cov protein nyob rau hauv nqe lus nug nyob rau hauv cov zaub mov, tsuas yog ua noj cov zaub mov yuav denature cov proteins. Ntau cov proteins tuaj yeem ua kom pom tseeb los ntawm kev nthuav tawm lawv mus rau qhov kub ntawm lossis siab dua 100 ° C (212 ° F).
Dab tsi ua rau muaj protein ntau?
Yog tias cov protein poob nws cov duab, nws yuav tsum tsis ua haujlwm. Cov txheej txheem uas ua rau cov protein poob nws cov duab yoglub npe hu ua denaturation. Denaturation feem ntau yog tshwm sim los ntawm kev ntxhov siab sab nraud ntawm cov protein, xws li cov kuab tshuaj, cov ntsev inorganic, raug rau cov kua qaub lossis cov hauv paus, thiab los ntawm tshav kub.
Pom zoo:
Puas yog acridine yog cov kua qaub lossis lub hauv paus?
Nws yog ib qho qauv molecule uas muaj feem cuam tshuam nrog anthracene nrog ib qho ntawm cov pawg CH hauv nruab nrab hloov los ntawm nitrogen. Zoo li cov molecules pyridine thiab quinoline, acridine yog me ntsis yooj yim. Nws yog ib qho yuav luag tsis muaj xim, uas crystallizes hauv koob.
Puas yog carbonic acid yog cov kua qaub uas muaj zog?
Hydrochloric acid (HCl) yog suav tias yog cov kua qaub uas muaj zog vim tias nws tsuas yog muaj nyob rau hauv daim ntawv ionized nkaus hauv lub cev, whereas carbonic acid (H 2CO 3 ) yog cov kua qaub tsis muaj zog vim nws yog ionized tsis tiav, thiab, ntawm qhov sib npaug, tag nrho peb cov reactants muaj nyob rau hauv lub cev kua.
Puas txias txias denature proteins?
Cov protein tau dhau los ua qhov txias thiab kub kub, tab sis feem ntau txias denaturation tsis tuaj yeem kuaj pom vim nws tshwm sim ntawm qhov kub hauv qab dej khov. Proteins tab tom nrhiav tau txias thiab kub denaturation yield ib tug txhim khu kev qha nkhaus ntawm protein stability.
Puas kua tsib kua qaub malabsorption ploj mus?
Cov neeg feem coob uas muaj cov kua tsib acid malabsorption teb zoo rau kev kho mob thiab muaj peev xwm tiv thaiv lossis tswj lawv cov tsos mob nrog cov tshuaj thiab kev hloov hauv kev ua neej. Cov kua tsib acid malabsorption hnyav npaum li cas?
Puas yog sulfamic acid yog cov kua qaub muaj zog?
Sulfamic Acid yog a muaj zog acid (pKa=1.0) thiab dissociates tag nrho hauv cov tshuaj aqueous. Lub pH ntawm qhov sib npaug point qhov sib npaug Qhov sib npaug taw tes, los yog stoichiometric taw tes, ntawm cov tshuaj tiv thaiv tshuaj yog qhov taw tes ntawm cov tshuaj sib npaug ntawm cov tshuaj reactants tau tov.
