Their biosynthesis occurs in the endoplasmic reticulum.
[1] VLCFA's can represent up to a few percent of the total fatty acid content of a cell.
[2] Unlike most fatty acids, VLCFAs are too long to be metabolized in the mitochondria, in the endoplasmic reticulum (ER) in plants and must be metabolized in peroxisomes.
Certain peroxisomal disorders, such as adrenoleukodystrophy and Zellweger syndrome, can be associated with an accumulation of VLCFAs.
[3][4] Enzymes that produce VLCFAs are the targets of herbicides including pyroxasulfone.