| 41. | Ornithine displaces the lysine to form a Schiff base attached to ODC, which decarboxylates to form a quinoid intermediate.
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| 42. | Arginase is a binuclear manganese metallopritein that catalyse the hydrolysis of L-arginine to L-ornithine and urea.
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| 43. | The OAT involved in the ultimate formation of the non-essential amino acid proline from the amino acid ornithine.
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| 44. | It catalyzes the reverse reaction as well, and is therefore essential in creating ornithine from the starting substrate proline.
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| 45. | This gene encodes a taxon-specific crystallin protein that binds NADPH and has sequence similarity to bacterial ornithine cyclodeaminases.
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| 46. | A fourth protein located at the cell membrane acts as transporter, allowing the antiporter exchange between arginine and ornithine.
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| 47. | Likewise, defects in the enzymes responsible for the urea cycle, such as ornithine transcarbamylase, lead to hyperammonemia.
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| 48. | Most victims of the rare disorder-- known as ornithine transcarbamylase deficiency, or OTC-- die as infants.
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| 49. | The actual reaction catalyzed by AGAT is the synthesis of guanidinoacetate from arginine and glycine, with ornithine as a byproduct.
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| 50. | The metabolic pathways : lysine degradation, arginine and proline metabolism, and d-arginine and d-ornithine metabolism.
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