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  2. Oxidase test - Wikipedia

    en.wikipedia.org/wiki/Oxidase_test

    If the area of inoculation turns dark-blue to maroon to almost black, then the result is positive. If a color change does not occur within three minutes, the result is negative. In alternative manner, live bacteria cultivated on trypticase soy agar plates may be prepared using sterile technique with a single-line streak inoculation. The ...

  3. Catechol oxidase - Wikipedia

    en.wikipedia.org/wiki/Catechol_oxidase

    The translocation of this intermediate into the thylakoid lumen was light-dependent and results in the generation of the mature 59 kD enzyme. [9] Based on analysis of the precursor and mature catechol oxidase purified from Ipomoea batatas , proteolytic processing removes both the N-terminal transit peptide as well as a C-terminal domain that ...

  4. Light-dependent reactions - Wikipedia

    en.wikipedia.org/wiki/Light-dependent_reactions

    The light-harvesting system of PSI uses multiple copies of the same transmembrane proteins used by PSII. The energy of absorbed light (in the form of delocalized, high-energy electrons) is funneled into the reaction center, where it excites special chlorophyll molecules (P700, with maximum light absorption at 700 nm) to a higher energy level.

  5. Photosynthetic reaction centre - Wikipedia

    en.wikipedia.org/wiki/Photosynthetic_reaction_centre

    This initial charge separation yields a positive charge on P and a negative charge on the BPh. This process takes place in 10 picoseconds (10 −11 seconds). [1] The charges on the P + and the BPh − could undergo charge recombination in this state, which would waste the energy and convert it into heat. Several factors of the reaction center ...

  6. Oxidase - Wikipedia

    en.wikipedia.org/wiki/Oxidase

    An important example is EC 7.1.1.9 cytochrome c oxidase, the key enzyme that allows the body to employ oxygen in the generation of energy and the final component of the electron transfer chain. Other examples are: EC 1.1.3.4 Glucose oxidase; EC 1.4.3.4 Monoamine oxidase; EC 1.14.-.- Cytochrome P450 oxidase; EC 1.6.3.1 NADPH oxidase

  7. Glucose oxidase - Wikipedia

    en.wikipedia.org/wiki/Glucose_oxidase

    The glucose oxidase enzyme (GOx or GOD) also known as notatin (EC number 1.1.3.4) is an oxidoreductase that catalyses the oxidation of glucose to hydrogen peroxide and D-glucono-δ-lactone. This enzyme is produced by certain species of fungi and insects and displays antibacterial activity when oxygen and glucose are present.

  8. Photosystem II - Wikipedia

    en.wikipedia.org/wiki/Photosystem_II

    Photosystem II (of cyanobacteria and green plants) is composed of around 20 subunits (depending on the organism) as well as other accessory, light-harvesting proteins. Each photosystem II contains at least 99 cofactors: 35 chlorophyll a, 12 beta-carotene , two pheophytin , two plastoquinone , two heme , one bicarbonate, 20 lipids, the Mn

  9. Cytochrome c oxidase - Wikipedia

    en.wikipedia.org/wiki/Cytochrome_c_oxidase

    Location of the 3 cytochrome c oxidase subunit genes in the human mitochondrial genome: COXI, COXII, and COXIII (orange boxes). Cytochrome c oxidase has 3 subunits which are encoded by mitochondrial DNA (cytochrome c oxidase subunit I, subunit II, and subunit III). Of these 3 subunits encoded by mitochondrial DNA, two have been identified in ...