Lipid metabolism; polyunsaturated fatty acid biosynthesis. The histidine box domains are involved in binding the catalytic metal ions. No visible phenotype and wild-type levels of both Hexadeca 7,10,13-trienoic acid (16:3(7Z,10Z,13Z)) and leaf chlorophyll content. ADS3.2 does not contribute to the FAD5 phenotype. Belongs to the fatty acid desaturase type 1 family.