Functional FAD-linked sulfhydryl oxidase that is required for infectious budded virion (BV) production and for the formation of enveloped occluded virion (ODV). O2 + 2 R'C(R)SH = H2O2 + R'C(R)S-S(R)CR' Homodimer. Shows a diffuse pattern of localization in the host cytoplasm and punctate localization in host nucleus. Belongs to the baculoviridae p33 family.