Prokaryotes vs. Eukaryotes âDifferences. Eukaryotes as well as protists, a miscellany group made up of eukaryote-like plant, animal and fungi missing one or more characteristics to be defined as purely eukaryotic, differ greatly from prokaryotes in structure.
It is now clear that prokaryotic cells possess actin and that a dynamic actin-like cytoskeleton is involved in a variety of essential cellular processes in bacteria. These functions, like those of the eukaryotic actin cytoskeleton, require the targeting and accurate positioning of proteins and molecular complexes.he discovery of the prokaryotic homologues of actin (as well as of other cytoskeletal elements in bacteria) has forced a radical rethink about the origin of the cytoskeleton and revolutionized our view of bacterial cell architecture.
For example, proteins that are found in membranes contain many hydrophobic amino acids, because the interior of membranes is a hydrophobic environment. These two diagrams of transport proteins show the location of the protein IN the cell membrane.Here, the protein is a blue oval/cylinder. For example, if actin is a protein consisting of a chain of 376 amino acids, then EVERY actin protein will be 376 amino acids long, and EVERY actin protein will have the same amino acid sequence, starting with methionine, cysteine, aspartic acid, asparagine, asparagine, and valine.