Vimentins are class-III intermediate filaments found in various non-epithelial cells, especially mesenchymal cells. Vimentin is attached to the nucleus, endoplasmic reticulum, and mitochondria, either laterally or terminally. Homomer. Expressed in low amounts in retina, optic nerve, brain, and spinal cord and in very high amounts in eye lens. One of the most prominent phosphoproteins in various cells of mesenchymal origin. Phosphorylation is enhanced during cell division, at which time vimentin filaments are significantly reorganized (By similarity). Belongs to the intermediate filament family.