| Aquaporin-8 | Humans | Channel that allows the facilitated permeation of water and uncharged molecules, such as hydrogen peroxide and the ne... more | 2 | Details |
| Aquaporin-9 | Humans | Aquaglyceroporins form homotetrameric transmembrane channels, with each monomer independently mediating glycerol and ... more | 7 | Details |
| Arabinose operon regulatory protein | Escherichia coli (strain K12) | Transcription factor that regulates the expression of several genes involved in the transport and metabolism of L-ara... more | 2 | Details |
| Arachidonate 12-lipoxygenase, 12R-type | Humans | Catalyzes the regio and stereo-specific incorporation of a single molecule of dioxygen into free and esterified polyu... more | 1 | Details |
| Arachidonate 5-lipoxygenase-activating protein | Humans | Required for leukotriene biosynthesis by ALOX5 (5-lipoxygenase). Anchors ALOX5 to the membrane. Binds arachidonic aci... more | 6 | Details |
| Aralkylamine dehydrogenase heavy chain | Alcaligenes faecalis | Oxidizes primary aromatic amines and, more slowly, some long-chain aliphatic amines, but not methylamine or ethylamin... more | 4 | Details |
| Aralkylamine dehydrogenase light chain | Alcaligenes faecalis | Oxidizes primary aromatic amines and, more slowly, some long-chain aliphatic amines, but not methylamine or ethylamin... more | 4 | Details |
| Arginase | Bacillus caldovelox | Controls arginine catabolism. | 2 | Details |
| Arginase-1 | Humans | Catalyzes the final step of the urea cycle by hydrolyzing L-arginine into urea, a nitrogenous waste product, and L-or... more | 16 | Details |
| Arginase-2, mitochondrial | Humans | May play a role in the regulation of extra-urea cycle arginine metabolism and also in down-regulation of nitric oxide... more | 4 | Details |
| Arginine | Not Available | Not Available | 3 | Details |
| Arginine deiminase | Pseudomonas aeruginosa (strain ATCC 15692 / PAO1 / 1C / PRS 101 / LMG 12228) | Not Available | 1 | Details |
| Arginine N-succinyltransferase subunit alpha | Pseudomonas aeruginosa (strain ATCC 15692 / PAO1 / 1C / PRS 101 / LMG 12228) | Catalyzes the transfer of succinyl-CoA to arginine to produce N(2)-succinylarginine. Also acts on L-ornithine. | 1 | Details |
| Arginine/agmatine antiporter | Escherichia coli O157:H7 | Major component of the acid-resistance (AR) system allowing enteric pathogens to survive the acidic environment in th... more | 1 | Details |
| Argininosuccinate lyase | Humans | Catalyzes the reversible cleavage of L-argininosuccinate to fumarate and L-arginine, an intermediate step reaction in... more | 3 | Details |
| Argininosuccinate synthase | Humans | One of the enzymes of the urea cycle, the metabolic pathway transforming neurotoxic amonia produced by protein catabo... more | 4 | Details |
| Argininosuccinate synthase | Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579) | Not Available | 2 | Details |
| Aromatase | Humans | A cytochrome P450 monooxygenase that catalyzes the conversion of C19 androgens, androst-4-ene-3,17-dione (androstened... more | 75 | Details |
| Aromatic hydrocarbon degradation protein | Ralstonia pickettii | Not Available | 1 | Details |
| Aromatic-amino-acid aminotransferase | Paracoccus denitrificans | Shows activities toward both dicarboxylic and aromatic substrates. | 11 | Details |
| Aromatic-L-amino-acid decarboxylase | Humans | Catalyzes the decarboxylation of L-3,4-dihydroxyphenylalanine (DOPA) to dopamine and L-5-hydroxytryptophan to serotonin | 16 | Details |
| Arsenate reductase | Escherichia coli | Involved in resistance to arsenate. Catalyzes the reduction of arsenate [As(V)] to arsenite [As(III)]. The resulting ... more | 5 | Details |
| Arsenate reductase | Staphylococcus aureus | Catalyzes the reduction of arsenate [As(V)] to arsenite [As(III)]. In vitro, has also low phosphatase activity with p... more | 3 | Details |
| Arsenic | Humans | Not Available | 3 | Details |
| Arsenical pump-driving ATPase | Escherichia coli | Anion-transporting ATPase. Catalyzes the extrusion of the oxyanions arsenite, antimonite and arsenate. Maintenance of... more | 4 | Details |