Qhov twg peroxidase pom?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Peroxidase kev ua si yog pom nyob rau hauv exocrine secretions xws li mis nyuj, kua muag, thiab qaub ncaug, nrog rau cov kua hauv qhov chaw mos (Table 1), feem ntau muab tau los ntawm cov enzymes synthesized nyob rau hauv cov qog, tab sis ib co kev ua los ntawm polymorphonuclear leukocytes (myeloperoxidase; MPO) los yog tej zaum eosinophil (eosinophil). peroxidase ; EPO).

Tsuas yog li ntawd, qhov twg peroxidase pom nyob rau hauv tib neeg?

Peroxidase yog ib qho enzyme pom nyob rau hauv ntau yam kab mob, los ntawm cov nroj tsuag mus rau tib neeg rau cov kab mob. Nws txoj haujlwm yog txhawm rau txhawm rau hydrogen peroxide (H2O2), uas yog ib qho ntawm cov co toxins uas ua los ntawm kev siv oxygen rau kev ua pa.

Qhov thib ob, puas muaj peroxidase hauv cov qos yaj ywm? Tsis tas li ntawd, qos yaj ywm tuaj yeem muab piv rau lwm qhov chaw zoo ntawm peroxidase : horseradish cag, txiv nkhaus taw txiv nkhaus taw thiab turnip radical (Worthington 1988). Cov peroxidase kev ua ntawm tshiab qos yaj ywm (los yog lwm qhov chaw) tuaj yeem muab piv rau qhov ntawd pom nyob rau hauv cov zaub mov npaj (cov kaus poom, khov los yog khov-qhuav).

Kuj nug, dab tsi yog qhov substrate ntawm peroxidase?

Rau ntau ntawm cov enzymes qhov zoo tshaj plaws substrate yog hydrogen peroxide, tab sis lwm tus muaj zog dua nrog cov organic hydroperoxides xws li lipid peroxides. Peroxidases tuaj yeem muaj heme cofactor hauv lawv qhov chaw nquag, lossis hloov pauv redox-active cysteine lossis selenocysteine residues.

Dab tsi tshwm sim yog catalyzed los ntawm peroxidase?

Peroxidases, tseem hu ua catalases, kuj yog oxidoreductase chav kawm ntawm cov enzymes, uas ua rau cov tshuaj tiv thaiv oxidoreduction. Lub peroxidase enzyme catalyzes decomposition ntawm hydrogen peroxide rau hauv dej thiab molecular oxygen (saib daim duab).