Histidine ammonia-lyase
histidine ammonia-lyase n.
An enzyme that catalyzes the deamination of histidine to urocanate. Also called histidase, histidinase.
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- Histidine decarboxylase
histidine decarboxylase n. An enzyme that catalyzes the decarboxylation of histidine to histamine.
- Histidinemia
histidinemia his·ti·di·ne·mi·a (hĭs’tĭ-də-nē’mē-ə) n. A hereditary disorder characterized by an elevation of histidine levels in the blood, excretion of histidine in the urine due to deficient histidase activity, and often manifested clinically by mild mental retardation.
- Histidinuria
histidinuria his·ti·di·nu·ri·a (hĭs’tĭ-də-nur’ē-ə, -nyur’-) n. The excretion of excessive histidine in the urine.
- Histidyl
histidyl his·ti·dyl (hĭs’tĭ-dĭl’) n. The univalent radical, C6H8N3O2, of histidine.
- Histio-
histio- pref. Body tissue: histioblast.