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・ Phosphoramidon
・ Phosphorane
・ Phosphorene
・ Phosphorescence
・ Phosphorescent (band)
・ Phosphorescent Harvest
・ Phosphorescent organic light-emitting diode
・ Phosphoria Formation
・ Phosphoribokinase
・ Phosphoribosyl pyrophosphate
・ Phosphoribosyl-AMP cyclohydrolase
・ Phosphoribosyl-ATP diphosphatase
・ Phosphoribosyl-N-formylglycineamide
・ Phosphoribosylamine
・ Phosphoribosylamine—glycine ligase
Phosphoribosylaminoimidazole carboxylase
・ Phosphoribosylaminoimidazole synthetase
・ Phosphoribosylaminoimidazolecarboxamide formyltransferase
・ Phosphoribosylaminoimidazolesuccinocarboxamide
・ Phosphoribosylaminoimidazolesuccinocarboxamide synthase
・ Phosphoribosylanthranilate isomerase
・ Phosphoribosylformylglycinamidine synthase
・ Phosphoribosylglycinamide formyltransferase
・ Phosphoribosyltransferase
・ Phosphoribulokinase
・ Phosphoric
・ Phosphoric acid
・ Phosphoric acid fuel cell
・ Phosphoric acids and phosphates
・ Phosphoric monoester hydrolases


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Phosphoribosylaminoimidazole carboxylase : ウィキペディア英語版
Phosphoribosylaminoimidazole carboxylase

Phosphoribosylaminoimidazole carboxylase (or AIR carboxylase) is an enzyme involved in nucleotide biosynthesis and in particular in purine biosynthesis. It catalyzes the conversion of 5'-phosphoribosyl-5-aminoimidazole ("AIR") into 5'-phosphoribosyl-4-carboxy-5-aminoimidazole ("CAIR") as described in the reaction:
:5-aminoimidazole ribonucleotide + CO2 \rightleftharpoons 5'-phosphoribosyl-4-carboxy-5-aminoimidazole + 2 H+
==In plants and fungi==
Phosphoribosylaminoimidazole carboxylase is a fusion protein in plants and fungi, but consists of two non-interacting proteins in bacteria, PurK and PurE.
The crystal structure of PurE indicates a unique quaternary structure that confirms the octameric nature of the enzyme.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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