Enigmatic Gratuitous Induction of the Covalent Flavoprotein Vanillyl-Alcohol Oxidase in Penicillium simplicissimum.

University of Groningen Enigmatic Gratuitous Induction of the Covalent Flavoprotein Vanillyl-Alcohol Oxidase in Penicillium simplicissimum Fraaije, Marco; Pikkemaat,

Subcellular localization of vanillyl-alcohol oxidase in Penicillium simplicissimum.

Growth of Penicillium simplicissimum on anisyl alcohol, veratryl alcohol or 4-(methoxymethyl)phenol, is associated with the synthesis of relatively large amounts of the hydrogen peroxide producing flavoprotein vanillyl-alcohol oxidase (VAO). Immunocytochemistry revealed that the enzyme has a dual location namely in peroxisomes and in the cytosol. The C-terminus of the primary structure of VAO d...

Mercuration of vanillyl-alcohol oxidase from Penicillium simplicissimum generates inactive dimers.

Vanillyl-alcohol oxidase (EC 1.1.3.7) from Penicillium simplicissimum was modified with p-mercuribenzoate. One cysteine residue reacts rapidly without loss of enzyme activity. Three sulfhydryl groups then react in an 'all or none process' involving enzyme inactivation and dissociation of the octamer into dimers. The inactivation reaction is slowed down in the presence of the competitive inhibit...

Structure, function and redesign of vanillyl-alcohol oxidase

Vanillyl-alcohol oxidase (VAO) from Penicillium simplicissimum is an inducible flavoprotein involved in the biodegradation of lignin-derived aromatic compounds. The enzyme is the prototype of a newly recognized family of structurally related oxidoreductases, whose members share a conserved FAD-binding domain. The flavin cofactor in VAO is covalently linked to His422 of the cap domain. This cova...

Crystallization and preliminary X-ray analysis of the flavoenzyme vanillyl-alcohol oxidase from Penicillium simplicissimum.

Vanillyl-alcohol oxidase catalyses the oxidation of several 4-hydroxybenzyl alcohols by using 8-alpha-(N3-histidyl)-FAD as a covalently bound prosthetic group. Crystals of vanillyl-alcohol oxidase from Penicillium simplicissimum have been grown by using the vapor diffusion technique. The space group was found to be I, with cell dimensions a = b = 140.5 A, c = 132.9 A. Diffraction data have been...