FAD-oxidase
{{Infobox protein family
| Symbol = FAD-oxidase_C
| Name = FAD linked oxidases, C-terminal domain
| image = PDB 1wve EBI.jpg
| width =
| caption = p-cresol methylhydroxylase: alteration of the structure of the flavoprotein subunit upon its binding to the cytochrome subunit
| Pfam = PF02913
| Pfam_clan = CL0277
| InterPro = IPR004113
| SMART =
| PROSITE =
| MEROPS =
| SCOP = 1ahu
| TCDB =
| OPM family =
| OPM protein =
| CAZy =
| CDD =
}}
In molecular biology FAD-oxidases are a family of FAD-dependent oxidoreductases. They are flavoproteins that contain a covalently bound FAD group which is attached to a histidine via an 8-alpha-(N3-histidyl)-riboflavin linkage. The region around the histidine that binds the FAD group is conserved in these enzymes.{{cite journal | vauthors = Mattevi A, Fraaije MW, Coda A, van Berkel WJ | title = Crystallization and preliminary X-ray analysis of the flavoenzyme vanillyl-alcohol oxidase from Penicillium simplicissimum | journal = Proteins | volume = 27 | issue = 4 | pages = 601–3 | date = April 1997 | pmid = 9141139 | doi = 10.1002/(SICI)1097-0134(199704)27:4<601::AID-PROT12>3.0.CO;2-O | url = https://pure.rug.nl/ws/files/3211668/1997ProteinsMattevi.pdf }}