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  2. Catalase - Wikipedia

    en.wikipedia.org/wiki/Catalase

    847 12359 Ensembl ENSG00000121691 ENSMUSG00000027187 UniProt P04040 P24270 RefSeq (mRNA) NM_001752 NM_009804 RefSeq (protein) NP_001743 NP_033934 Location (UCSC) Chr 11: 34.44 – 34.47 Mb Chr 2: 103.28 – 103.32 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Catalase is a common enzyme found in nearly all living organisms exposed to oxygen (such as bacteria, plants, and animals ...

  3. Substrate (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Substrate_(chemistry)

    The products are two polypeptides that have been formed by the cleavage of the larger peptide substrate. Another example is the chemical decomposition of hydrogen peroxide carried out by the enzyme catalase. As enzymes are catalysts, they are not changed by the reactions they carry out. The substrate(s), however, is/are converted to product(s).

  4. Diagnostic microbiology - Wikipedia

    en.wikipedia.org/wiki/Diagnostic_Microbiology

    The catalase test tests whether a microbe produces the enzyme catalase, which catalyzes the breakdown of hydrogen peroxide. Smearing a colony sample onto a glass slide and adding a solution of hydrogen peroxide (3% H 2 O 2) will indicate whether the enzyme is present or not. Bubbling is a positive test while nothing happening is a negative result.

  5. Acatalasia - Wikipedia

    en.wikipedia.org/wiki/Acatalasia

    Acatalasia is an autosomal recessive peroxisomal disorder caused by absent or very low levels of the enzyme catalase. [2] Catalase breaks down hydrogen peroxide in cells into water and oxygen. Low levels of catalase can cause hydrogen peroxide to build up, causing damage to cells.

  6. Enzyme assay - Wikipedia

    en.wikipedia.org/wiki/Enzyme_assay

    The % purity is 100% × (specific activity of enzyme sample / specific activity of pure enzyme). The impure sample has lower specific activity because some of the mass is not actually enzyme. If the specific activity of 100% pure enzyme is known, then an impure sample will have a lower specific activity, allowing purity to be calculated and ...

  7. Enzyme unit - Wikipedia

    en.wikipedia.org/wiki/Enzyme_unit

    The enzyme unit, or international unit for enzyme (symbol U, sometimes also IU) is a unit of enzyme's catalytic activity. [ 1 ] 1 U (μmol/min) is defined as the amount of the enzyme that catalyzes the conversion of one micro mole of substrate per minute under the specified conditions of the assay method .

  8. Meghan McCain Reveals She Had a Mass in Her Breast ... - AOL

    www.aol.com/meghan-mccain-reveals-she-had...

    Meghan McCain is educating her followers after dealing with a health scare last week.. On Dec. 30, the former View host, 40, posted on Instagram and revealed that she found a mass on her breast ...

  9. Catalase-peroxidase - Wikipedia

    en.wikipedia.org/wiki/Catalase-peroxidase

    Catalase-peroxidase (EC 1.11.1.21, katG ... This enzyme is a strong catalase with H 2 O 2 as donor which releases O 2. References External links ...