Catalase yog a tetrameric heme protein thiab detoxifies H2O2 rau hauv oxygen thiab dej. Nws yog ib qho metalloprotein oxidoreductase enzyme thiab ua haujlwm tau zoo H2O2 thaum nws muaj nyob rau hauv siab (Hnub 2009, Cao et al., 2003). Nws muaj nyob rau hauv peroxisomes.
hom enzyme yog catalase?
Peroxidases, tseem hu ua catalases, kuj yog an oxidoreductase chav kawm ntawm enzymes, uas catalyze oxidoreduction cov tshuaj tiv thaiv. Lub peroxidase enzyme catalyzes decomposition ntawm hydrogen peroxide rau hauv dej thiab molecular oxygen (saib daim duab). Catalase yog ib qho enzyme uas muaj cov enzymes.
YPuas yog catalase yog amino acid?
Catalase yog a tetramer, txhua cov saw polypeptide yog ntau tshaj 500 amino acids ntev. Nws muaj plaub pawg porphyrin heme (hlau) uas tso cai rau cov enzyme ua rau cov tshuaj hydrogen peroxide. … Cov dawb oxygen atom ua haujlwm, tso tawm cov dej molecule tshiab thiab Fe(IV)=O.
Puas yog catalase ib cell?
Catalases yog qee yam ntawm ntau cov enzymes pom muaj nyob hauv hlwb. Txhua catalase molecule tuaj yeem decompose tsheej lab ntawm hydrogen peroxide molecules txhua ob.
catalase yog dab tsi thiab nws txoj haujlwm yog dab tsi?
Catalase yog ib qho tseem ceeb enzyme uas siv hydrogen peroxide, ib qho nonradical ROS, raws li nws cov substrate. Cov enzyme no yog lav rau kev ua kom tsis zoo los ntawm kev sib cais ntawm hydrogen peroxide, yog li tswj hwm qib zoo ntawm cov molecule hauv cell uas tseem yog qhov tseem ceeb rau cov txheej txheem ntawm tes.
