Published 17 March 2003. doi:10.1083/jcb.200301035
© The Rockefeller University Press,
0021-9525/2003/3/811 $5.00
The Journal of Cell Biology, Volume 160, Number 6, 811-816
Polarized growth and organelle segregation in yeast
:
the tracks, motors, and receptors
Anthony Bretscher
Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853
Address correspondence to Anthony Bretscher, Dept. of Molecular Biology and Genetics, Biotechnology Bldg., Cornell University, Ithaca, NY 14853. Tel.: (607) 255-5713. Fax: 607-255-6249. E-mail: apb5{at}cornell.edu
In yeast, growth and organelle segregation requires formin-dependent assembly of polarized actin cables. These tracks are used by myosin Vs to deliver secretory vesicles for cell growth, organelles for their segregation, and mRNA for fate determination. Several specific receptors have been identified that interact with the cargo-binding tails of the myosin Vs. A recent study implicates specific degradation in the bud of the vacuolar receptor, Vac17, as a mechanism for cell cycleregulated segregation of this organelle.
Key Words: polarity; transport; actin; myosin; vacuole

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