title: Structural Basis of Cargo Recognition by Unconventional Myosins in Cellular Trafficking.
abstract: Unconventional myosins are a superfamily of actin-based molecular motors playing diverse roles including cellular trafficking, mechanical supports, force sensing and transmission, etc. The variable neck and tail domains of unconventional myosins function to bind to specific cargoes including proteins and lipid vesicles and thus are largely responsible for the diverse cellular functions of myosins in vivo. In addition, the tail regions, together with their cognate cargoes, can regulate activities of the motor heads. This review outlines the advances made in recent years on cargo recognition and cargo binding-induced regulation of the activity of several unconventional myosins including myosin-I, V, VI and X in cellular trafficking. We approach this topic by describing a series of high-resolution structures of the neck and tail domains of these unconventional myosins either alone or in complex with their specific cargoes, and by discussing potential implications of these structural studies on cellular trafficking of these myosin motors.
authors: Division of Life Science, State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
authors: Jianchao
authors: J
authors: Li
authors: Division of Life Science, State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
authors: Qing
authors: Q
authors: Lu
authors: Division of Life Science, State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.|Center of Systems Biology and Human Health, School of Science and Institute for Advanced Study, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
authors: Mingjie
authors: M
authors: Zhang
mesh_terms: D000199:Actins / Q000378:metabolism*; D000595:Amino Acid Sequence / Q000502:physiology; D000818:Animals; D002465:Cell Movement / Q000502:physiology*; D006801:Humans; D008958:Models, Molecular; D009218:Myosins / Q000378:metabolism*; D021381:Protein Transport / Q000502:physiology*
chemical_list: D000199:Actins; D009218:Myosins
keywords: cargo recognition; cargo transport; myosin tail domain; myosin-I; myosin-V; myosin-VI; myosin-X; unconventional myosins