Eukaryotic cells (of animals, plants, fungi, protists, and chromists) have a structural framework of proteins termed cytoskeleton (skeleton of cells) for forming their shapes, keeping the organelles and internal components in place, movement, and intracellular transport and signaling. There are three groups of cytoskeletal proteins, namely:
2) Intermediate filaments, and
The intermediate filament counterpart in prokaryotes (bacteria) is the crescentin.
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