Histidine ammonia-lyase

GPTKB entity

Statements (31)
Predicate Object
gptkbp:instanceOf gptkb:enzyme
gptkbp:alternativeName gptkb:histidase
gptkb:histidinase
gptkbp:biologicalProcess ammonia-lyase activity
gptkbp:CASNumber 9029-40-9
gptkbp:catalyzes deamination of L-histidine to urocanate
gptkbp:cofactor none (uses a covalently bound prosthetic group, not a typical cofactor)
gptkbp:deficiencyCauses histidinemia
gptkbp:EC_number 4.3.1.3
gptkbp:first_step_in histidine degradation pathway
gptkbp:foundIn gptkb:Bacteria
animals
fungi
plants
gptkbp:gene gptkb:HAL
gptkbp:GO_term GO:0004411
https://www.w3.org/2000/01/rdf-schema#label Histidine ammonia-lyase
gptkbp:inhibitedBy urocanic acid (feedback inhibition)
gptkbp:location gptkb:cytoplasm
gptkbp:OMIM 609457
gptkbp:pathway histidine catabolism
gptkbp:product gptkb:urocanate
ammonia
gptkbp:structure homotetramer
gptkbp:substrate gptkb:L-histidine
gptkbp:systematicName gptkb:L-histidine_ammonia-lyase
gptkbp:type L-histidine → urocanate + NH3
gptkbp:UniProtID P42357
gptkbp:used_in diagnosis of histidinemia
gptkbp:bfsParent gptkb:HALS
gptkbp:bfsLayer 6