Dab tsi yog monomer ntawm catalase?
Dab tsi yog monomer ntawm catalase?

Video: Dab tsi yog monomer ntawm catalase?

Video: Dab tsi yog monomer ntawm catalase?
Video: Yog Vim Dab Tsi - Maiv Choj (cover) 2024, Kaum ib hlis
Anonim

Catalase . Catalase yog homotetrameric heme-muaj enzyme tam sim no nyob rau hauv lub matrix ntawm tag nrho cov peroxisomes. Nws ua rau muaj kev cuam tshuam cov tshuaj tiv thaiv uas hydrogen peroxide hloov mus rau dej thiab oxygen. Cov monomer ntawm tib neeg catalase yog 61.3 kDa hauv molecular loj.

Ib yam li ntawd, tib neeg nug, tus qauv ntawm catalase yog dab tsi?

Catalase (EC 1.11. 1.6) yog ib qho enzyme uas muaj nyob rau hauv cov peroxisomes ntawm mammalian hlwb. Nws yog ib tug tetrameric enzyme uas muaj plaub zoo tib yam, tetrahedrally teem subunits ntawm 60 kDa, txhua tus muaj nyob rau hauv nws active chaw ib heme pawg thiab NADPH.

Ib yam li ntawd, cov qauv thiab kev ua haujlwm ntawm catalase yog dab tsi? Catalase yog ib qho enzyme uas hloov hydrogen peroxide rau hauv dej thiab cov pa oxygen. Enzymes yog cov protein molecules uas muaj cov subunits hu ua amino acids. Amino acids zoo ib yam li kev sib txuas hauv cov saw hlau, thaum cov protein zoo ib yam li cov saw hlau nws tus kheej.

Hauv qhov no, hom enzyme twg yog catalase?

Chr. Catalase yog ib qho enzyme uas muaj nyob rau hauv yuav luag txhua yam kab mob uas muaj sia nyob raug oxygen (xws li kab mob, nroj tsuag, thiab tsiaj txhu). Nws catalyzes lub 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).

Puas yog catalase yog quaternary qauv?

Cov Catalase qauv muaj plaub qhov tseem ceeb. Qhov thib ob qauv yog lub folding ntawm polypeptide qaum qaum ntawm lub catalase . Lub tertiary qauv yog tag nrho cov duab los ntawm cov amino acids. Cov quaternary qauv yog cov duab tshwj xeeb ntawm cov enzyme vim kev npaj ntawm cov subunits.

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