An Ancient Anterior Patterning System Promotes Caudal Repression and Head Formation in Ecdysozoa
An Ancient Anterior Patterning System Promotes Caudal Repression and Head Formation in Ecdysozoa
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古老的前部模式系统促进蜕皮动物的尾部抑制和头部形成
DOI:
10.1016/j.cub.2009.09.026
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发表时间:
2009
期刊:
影响因子:
9.2
通讯作者:
Klingler
中科院分区:
文献类型:
--
作者:
Schoppmeier;Fischer;Schmitt-Engel;Klingler
Posterior expression of Caudal is required for early embryonic development in nematodes, arthropods, and vertebrates [1–9]. InDrosophila, ectopic Caudal in anterior cells can induce head defects, and inCaenorhabditisthe absence of Caudal in anterior embryonic cells is required for proper development [6, 10]. Anterior Caudal repression in these species is achieved through unrelated translational repressors, the homeodomain protein Bicoid [11] and the KH domain factor Mex-3 [6, 12], respectively. Here we report that the Mex-3 ortholog in the flour beetleTriboliumplays a crucial role in head formation and that Caudal in this species is repressed by the combined activities of Mex-3 and Zen-2, a protein sharing common ancestry with the dipteran morphogen Bicoid. We propose that Mex-3 represents an ancient "anterior" promoting factor common to all Ecdysozoa (and maybe all Bilateria), whose role has been usurped in higher dipterans by Bicoid.
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影响因子:
4.6
作者:
Christian Wolff;Reinhard Schröder;C. Schulz;Diethard Tautz;Martin Klingler
通讯作者:
Martin Klingler
影响因子:
4.6
作者:
C. Schulz;Diethard Tautz
通讯作者:
Diethard Tautz
影响因子:
4.6
作者:
M. Epstein;G. Pillemer;Ronit Yelin;J. Yisraeli;A. Fainsod
通讯作者:
A. Fainsod
影响因子:
64.8
作者:
Dubnau, J;Struhl, G
通讯作者:
Struhl, G