The Control of semaphorin-1a-mediated reverse signaling by opposing pebble and RhoGAPp190 functions in drosophila.
The Control of semaphorin-1a-mediated reverse signaling by opposing pebble and RhoGAPp190 functions in drosophila.
复制标题
DOI:
10.1016/j.neuron.2012.09.018
复制
发表时间:
2012-11-21
期刊:
影响因子:
16.2
通讯作者:
Kolodkin AL
中科院分区:
文献类型:
--
作者:
Jeong S;Juhaszova K;Kolodkin AL
Transmembrane semaphorins (Semas) serve evolutionarily conserved guidance roles, and some function as both ligands and receptors. However, the molecular mechanisms underlying the transduction of these signals to the cytoskeleton remain largely unknown. We have identified two direct regulators of Rho family small GTPases, pebble (a Rho guanine nucleotide exchange factor (GEF)) and RhoGAPp190 (a GTPase activating protein (GAP)), that show robust interactions with the cytoplasmic domain of the Drosophila Sema-1a protein. Neuronal pebble and RhoGAPp190 are required to control motor axon defasciculation at specific pathway choice points and also for target recognition during Drosophila neuromuscular development. Sema-1a–mediated motor axon defasciculation is promoted by pebble and inhibited by RhoGAPp190. Genetic analyses show that opposing pebble and RhoGAPp190 functions mediate Sema-1a reverse signaling through the regulation of Rho1 activity. Therefore, pebble and RhoGAPp190 transduce transmembrane semaphorin–mediated guidance cue information that regulates the establishment of neuronal connectivity during Drosophila development.
登录
查看更多内容
影响因子:
64.5
作者:
KLAES, A;MENNE, T;KLAMBT, C
通讯作者:
KLAMBT, C
影响因子:
25
作者:
Godenschwege, TA;Hu, HL;Murphey, RK
通讯作者:
Murphey, RK
影响因子:
7.2
作者:
Bashaw, Greg J.;Klein, Ruediger
通讯作者:
Klein, Ruediger
影响因子:
64.5
作者:
Komiyama, Takaki;Sweeney, Lora B.;Luo, Liqun
通讯作者:
Luo, Liqun
影响因子:
10.5
作者:
LUO, LQ;LIAO, YJ;JAN, YN
通讯作者:
JAN, YN