MolecularVarious machinesAMMs canhave bebeen divideddesigned intowith twoa broad categories;range artificialof functions and biological. In generalapplications, artificialseveral molecularof machines (AMMs) refer to molecules that are artificially designed and synthesized whereas biological molecular machines can commonly be found in nature andwhich have evolved intobeen theirtabulated formsbelow afteralong [[abiogenesis]]with onindicative Earth.images:<ref name="Erbas-Cakmak 2015 10081–10206">{{Cite journal|last1=Erbas-Cakmak|first1=Sundus|last2=Leigh|first2=David A.|last3=McTernan|first3=Charlie T.|last4=Nussbaumer|first4=Alina L.|title=Artificial Molecular Machines|journal=Chemical Reviews|volume=115|issue=18|pages=10081–10206|doi=10.1021/acs.chemrev.5b00146|pmid=26346838|pmc=4585175|year=2015}}</ref>
