Abstract
MYO18A is a divergent member of the myosin family characterized by the presence of an amino-terminal PDZ domain. MYO18A has been found in a few different complexes involved in intracellular transport processes. MYO18A is found in a complex with LURAP1 and MRCK that functions in retrograde treadmilling of actin. It also has been found in a complex with PAK2, βPIX, and GIT1, functioning to transport that protein complex from focal adhesions to the leading edge. Finally, a high proportion of MYO18A is found in complex with GOLPH3 at the trans Golgi, where it functions to promote vesicle budding for Golgi-to-plasma membrane trafficking. Interestingly, MYO18A has been implicated as a cancer driver, as have other components of the GOLPH3 pathway. It remains uncertain as to whether or not MYO18A has intrinsic motor activity. While many questions remain, MYO18A is a fascinatingly unique myosin that is essential in higher organisms.
Keywords:
Cancer; Cell migration; GOLPH3; Golgi; MYO18A; Myosin.
Copyright © 2017 Elsevier Ltd. All rights reserved.
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, Non-P.H.S.
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Review
MeSH terms
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Adaptor Proteins, Signal Transducing / genetics
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Adaptor Proteins, Signal Transducing / metabolism
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Animals
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Biological Transport, Active
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Cell Cycle Proteins / genetics
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Cell Cycle Proteins / metabolism
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Cell Membrane / genetics
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Cell Membrane / metabolism*
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Golgi Apparatus / genetics
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Golgi Apparatus / metabolism*
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Humans
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Membrane Proteins / genetics
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Membrane Proteins / metabolism
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Myosins / genetics
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Myosins / metabolism*
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Rho Guanine Nucleotide Exchange Factors / genetics
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Rho Guanine Nucleotide Exchange Factors / metabolism
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Tumor Suppressor Proteins / genetics
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Tumor Suppressor Proteins / metabolism
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p21-Activated Kinases / genetics
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p21-Activated Kinases / metabolism
Substances
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Adaptor Proteins, Signal Transducing
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Cell Cycle Proteins
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GIT1 protein, human
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GOLPH3 protein, human
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LURAP1 protein, human
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MYO18A protein, human
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Membrane Proteins
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Rho Guanine Nucleotide Exchange Factors
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Tumor Suppressor Proteins
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PAK2 protein, human
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p21-Activated Kinases
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Myosins