Aldehyde decarbonylase involved in the conversion of aldehydes to alkanes. Core component of a very-long-chain alkane synthesis complex. a long-chain fatty aldehyde + H(+) + 2 NADPH + O2 = a long-chain alkane + formate + H2O + 2 NADP(+) Homodimer. Expressed ubiquitously at low levels, with higher accumulation in developing panicles, shoots and flag leaves. Expressed throughout panicle development. In mature spikelets, present at low levels in anthers and palea/lemma, and barely detectable in the ovaries and lodicules. Induced by cold and abscisic acid (ABA). Identified as LOC_Os02g40780 in PubMed:17138699. Belongs to the sterol desaturase family.