Protein: 4-aminobenzoate N-oxygenase (EC 1.14.99.68) (N-oxygenase) (Non-heme di-iron N-oxygenase) (p-aminobenzoate oxygenase) (Q70KH9)
Organism: Streptomyces thioluteus
Function: Involved in the biosynthesis of the polyketide antibiotic aureothin. Catalyzes the oxidation of p-aminobenzoate (pABA) to p-nitrobenzoate (pNBA), an unusual polyketide synthase starter unit. Reaction mechanism involves the generation of a peroxodiiron(III/III) intermediate, which effects the initial oxidation of p-aminobenzoate to p-hydroxylaminobenzoate (Ar-NHOH). Ar-NHOH is then probably directly converted to the fully oxidized p-nitrobenzoate via a four-electron N-oxidation, bypassing the formation of a nitroso compound.
Sequence: MREEQPHLATTWAARGWVEEEGIGSATLGRLVRAWPRRAAVVNKADILDEWADYDTLVPDYPLEIVPFAEHPLFLAAEPHQRQRVLTGMWIGYNERVIATEQLIAEPAFDLVMHGVFPGSDDPLIRKSVQQAIVDESFHTYMHMLAIDRTRELRKISERPPQPELVTYRRLRRVLADMPEQWERDIAVLVWGAVAETCINALLALLARDATIQPMHSLITTLHLRDETAHGSIVVEVVRELYARMNEQQRRALVRCLPIALEAFAEQDLSALLLELNAAGIRGAEEIVGDLRSTAGGTRLVRDFSGARKMVEQLGLDDAVDFDFPERPDWSPHTPR
InterPro domains: - IPR012348: Ribonucleotide reductase-like (homologous_superfamily) [24-336]
- IPR054674: 4-aminobenzoate N-oxygenase AurF (family) [1-333]
- IPR025859: AurF/CmlI (family) [26-315]
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0003824 (catalytic activity), GO:0016491 (oxidoreductase activity), GO:0016705 (oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen), GO:0004497 (monooxygenase activity), GO:0016709 (oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen, NAD(P)H as one donor, and incorporation of one atom of oxygen)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0009987 (cellular process), GO:0009058 (biosynthetic process), GO:0044237 (cellular metabolic process), GO:0044281 (small molecule metabolic process), GO:0006807 (nitrogen compound metabolic process), GO:0071704 (organic substance metabolic process), GO:0044238 (primary metabolic process), GO:1901360 (organic cyclic compound metabolic process), GO:1901576 (organic substance biosynthetic process), GO:1901564 (organonitrogen compound metabolic process), GO:0006139 (nucleobase-containing compound metabolic process), GO:0046483 (heterocycle metabolic process), GO:0055086 (nucleobase-containing small molecule metabolic process), GO:0019637 (organophosphate metabolic process), GO:0044249 (cellular biosynthetic process), GO:0006725 (cellular aromatic compound metabolic process), GO:0034641 (cellular nitrogen compound metabolic process), GO:1901135 (carbohydrate derivative metabolic process), GO:0035383 (thioester metabolic process), GO:0006793 (phosphorus metabolic process), GO:1901566 (organonitrogen compound biosynthetic process), GO:1901362 (organic cyclic compound biosynthetic process), GO:0006753 (nucleoside phosphate metabolic process), GO:0019438 (aromatic compound biosynthetic process), GO:0018130 (heterocycle biosynthetic process), GO:0019693 (ribose phosphate metabolic process), GO:0090407 (organophosphate biosynthetic process), GO:0006796 (phosphate-containing compound metabolic process), GO:0044271 (cellular nitrogen compound biosynthetic process), GO:0072521 (purine-containing compound metabolic process), GO:1901137 (carbohydrate derivative biosynthetic process), GO:0034654 (nucleobase-containing compound biosynthetic process), GO:0009259 (ribonucleotide metabolic process), GO:0009117 (nucleotide metabolic process), GO:0046390 (ribose phosphate biosynthetic process), GO:0006163 (purine nucleotide metabolic process), GO:0034032 (purine nucleoside bisphosphate metabolic process), GO:0072522 (purine-containing compound biosynthetic process), GO:1901293 (nucleoside phosphate biosynthetic process), GO:0033865 (nucleoside bisphosphate metabolic process), GO:0009165 (nucleotide biosynthetic process), GO:0006164 (purine nucleotide biosynthetic process), GO:0009150 (purine ribonucleotide metabolic process), GO:0009260 (ribonucleotide biosynthetic process), GO:0034033 (purine nucleoside bisphosphate biosynthetic process), GO:0033866 (nucleoside bisphosphate biosynthetic process), GO:0033875 (ribonucleoside bisphosphate metabolic process), GO:0009152 (purine ribonucleotide biosynthetic process), GO:0015937 (coenzyme A biosynthetic process), GO:0034030 (ribonucleoside bisphosphate biosynthetic process)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005737 (cytoplasm), GO:0005622 (intracellular anatomical structure)