First published online November 7, 2006
Development 133, 2302e (2006)
© The Company of Biologists Limited
Rab11 goes to (the) BEACH
Vesicle trafficking is essential for many developmental events in
Drosophila, such as eye and bristle development and synaptic
morphogenesis. On p.
4655, Khodosh and colleagues provide new information about the
developmental regulation of this process by reporting that the
Drosophila BEACH protein Blue cheese (Bchs) antagonizes Rab11, a
small GTPase that is involved in vesicle trafficking. BEACH proteins (large
proteins that contain a `Beige and Chédiak-Higashi domain') have been
implicated in membrane trafficking, but how they regulate this process is a
mystery. The researchers show that reductions in bchs function
suppress the effects of loss-of-function rab11 mutations in bristle
and eye development; they also suppress the changes in synapse morphology at
the neuromuscular junction (NMJ) that are caused by reductions in
rab11 function. Consistent with this last effect, Bchs colocalizes
with Rab11 at the NMJ in vesicles. The researchers conclude that Bchs
antagonizes Rab11 during development and suggest that interactions between
other BEACH proteins and small GTPases could also regulate vesicle trafficking
during development.

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Related articles in Development:
- Bchs, a BEACH domain protein, antagonizes Rab11 in synapse morphogenesis and other developmental events
- Rita Khodosh, Adela Augsburger, Thomas L. Schwarz, and Paul A. Garrity
Development 2006 133: 4655-4665.
[Abstract]
[Full Text]