Video: Dab tsi ntawm enzyme yog catalase?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Chr. Catalase yog ib qho enzyme uas muaj nyob hauv yuav luag txhua yam kab mob uas muaj sia nyob tau raug oxygen (xws li kab mob, nroj tsuag, thiab tsiaj txhu). Nws catalyzes decomposition ntawm hydrogen peroxide rau dej thiab oxygen. Nws yog ib qho tseem ceeb heev enzyme tiv thaiv lub cell ntawm oxidative puas los ntawm reactive oxygen hom (ROS).
Kuj paub, dab tsi hauv chav kawm ntawm enzyme yog catalase?
17.3 ib. 2.2 Biosensors raws li kev hloov hluav taws xob ncaj qha ntawm catalase . Catalase yog ib tug heme protein teej tug mus rau lub chav kawm ntawm oxidoreductases nrog ferriprotoporphyrin-IX ntawm redox center, thiab nws catalyzes disproportionation ntawm hydrogen peroxide rau hauv oxygen thiab dej yam tsis muaj kev tsim cov dawb radicals.
Ib sab saum toj no, lub luag haujlwm ntawm catalase enzyme yog dab tsi? Catalase yog ib yam enzyme , pom nyob rau hauv yuav luag txhua yam muaj sia nyob. Nws catalyses hydrogen peroxide rau hauv dej thiab oxygen thiab tiv thaiv kab mob los ntawm cov dawb radicals Nws kuj muaj kev lag luam siv los tiv thaiv qee yam kab mob hauv cov zaub mov thiab ua tshuaj tua kab mob rau cov lo ntsiab muag thiab cov tshuaj ntxuav hauv qee yam khoom.
Tsis tas li ntawd, puas yog catalase ib qho enzyme extracellular?
Piv txwv li, catalase yog ib yam intracellular enzyme uas ua rau kom lub decomposition ntawm hydrogen peroxide (ib tug byproduct ntawm metabolism) rau hauv dej thiab oxygen. Xwb, lub extracellular enzyme tripsin rhuav tshem casein hauv cov mis nyuj, hloov nws cov xim ntawm dawb mus rau ntshiab.
Puas yog catalase yog oxidoreductase?
Catalase (CAT) Catalase yog tetrameric heme protein thiab detoxifies H2O2 nyob rau hauv oxygen thiab dej. Nws yog metalloprotein oxidoreductase kev kho mob enzyme thiab muaj txiaj ntsig scavenges H2O2 thaum nws muaj nyob rau hauv high concentrations (Hnub 2009, Cao et al., 2003).
Pom zoo:
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