1A kind of protein found principally in the cytoskeleton and also associated with chromatin in the cell nucleus.
2Any of a group of actin-binding proteins which occur in most tissues of higher eukaryotes.
The most common in humans are "L-plastin" found in haemopoietic cells, and "T-plastin" in the remaining tissues retain the capacity to replicate.
Late 19th century; earliest use found in Science. From German Plastin from ancient Greek πλαστός formed, moulded + German -in, after Chromatin.