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Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

Haem enzyme containing ferric ion, of molecular weight 250, 000. It catalyses the decomposition of hydrogen peroxide into water and oxygen. It occurs in many tissues, especially liver, where it is located in the peroxisomes.  2, record 1, English, - catalase

Record number: 1, Textual support number: 1 CONT

Peroxisomes contain most of a cell’s catalase. In addition, they contain one or more enzymes that use molecular oxygen to remove hydrogen atoms from specific substrates.... Catalase utilizes the H₂O₂ generated by these other enzymes to oxidize a variety of substrates - including phenols, formic acid, formaldehyde, and alcohol - by the "peroxidative" reaction.  3, record 1, English, - catalase

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Enzyme du groupe des chromoprotéines porphyriniques contenant du fer ferrique qui catalyse la décomposition de l'eau oxygénée en eau et oxygène, empêchant ainsi toute accumulation d'eau oxygénée dans les tissus.  2, record 1, French, - catalase

Record number: 1, Textual support number: 1 CONT

La catalase existe dans les tissus animaux et végétaux. Son action catalytique est extrêmement rapide. La catalase est très proche de la peroxydase, composée du même groupement prosthétique, mais différente par la structure de sa partie protéinique (apoenzyme).  3, record 1, French, - catalase

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 DEF

Enzima que cataliza la descomposición del peróxido de hidrógeno en agua y oxígeno.  2, record 1, Spanish, - catalasa

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

Oxidized form of haemoglobin that is unable to bind oxygen because the ferrous atoms of the haem group have been oxidized to their ferric state.  1, record 2, English, - methaemoglobin

Record number: 2, Textual support number: 1 CONT

In the normal function of hemoglobin and myoglobin the iron atom does not undergo change in valence as oxygen is bound and lost; it remains in the Fe(II) state. However, both hemoglobin and myoglobin can be oxidized to the Fe(III), or hemin, form by oxidizing agents such as ferricyanide, with a change in color from red to brown. The respective products, which do not function reversibly as oxygen carriers, are called methemoglobin and metmyoglobin. In the cytochromes, however, the iron atom undergoes reversible changes between Fe(II) and Fe(III) forms; cytochromes serve as electron carriers, whereas hemoglobin and myoglobin act as ligand (oxygen) carriers.  3, record 2, English, - methaemoglobin

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Forme anormalement oxydée de l'hémoglobine, le fer de l'hème passant de l'état ferreux (Fe⁺⁺) à l'état ferrique (Fe⁺⁺⁺).  1, record 2, French, - m%C3%A9th%C3%A9moglobine

Record number: 2, Textual support number: 1 OBS

Les hématies en contiennent 1% dans les conditions normales.  1, record 2, French, - m%C3%A9th%C3%A9moglobine

Record 2,  Textual support,  Spanish

Record number: 2, Textual support number: 1 DEF

Hemoglobina oxidada en la que los átomos de hierro aparecen en estado férrico y, por tanto, es incapaz de actuar como pigmento respiratorio.  2, record 2, Spanish, - metahemoglobina

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

In an electron transport chain a (terminal) cytochrome which transfers electrons to molecular oxygen, reducing it to water.  2, record 3, English, - cytochrome%20oxidase

Record number: 3, Textual support number: 1 OBS

Cytochrome oxidases include cyts aa3, a1, d and o(bacteria typically have more than one type of cyto, chrome oxidase). The electron transport choose in the animal mitochondrion appears to have only one type of cytochrome oxidase, cyt aa3, which resembles the bacterial cyt aa3 in containing two haem a molecules and two copper atoms; in at least some plant mitochondria there is an additional cyanide-resistant cytochrome oxidase.  2, record 3, English, - cytochrome%20oxidase

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 OBS

La cytochrome oxydase catalyse le transfert d'électrons du cytochrome c À O2. La cytochrome oxydase, le dernier des trois assemblages de pompage des protons de la chaîne respiratoire, catalyse le transfert d'électrons du cytochrome c réduit à l'oxygène moléculaire, accepteur final [...] Quatre électrons sont conduits vers O2 pour le réduire complètement en H2O, et en même temps pomper des protons de la matrice vers la face cytosolique de la membrane mitochondriale interne. Le terme cytosolique est utilisé pour désigner le côté de la membrane interne opposé au côté matriciel, parce qu'il est librement accessible à la plupart des petites molécules du cytosol.  2, record 3, French, - cytochrome%20oxydase

Record 3,  Textual support,  Spanish