期刊
MECHANISMS OF DEVELOPMENT
卷 100, 期 1, 页码 109-113出版社
ELSEVIER
DOI: 10.1016/S0925-4773(00)00506-2
关键词
cell motility; CNS; delamination; development; Drosophila; DTRAF; embryogenesis; expression; gut; IL-1; imago; mesoderm; morphogenetic movement; neuroblast; NGF low affinity receptor; PNS; SNS; TRAF; TRAF4; TNF; nervous system; NF-kappa B; signaling; signal transduction; somatopleura; visceral mesoderm; vitellophage
TNF-receptor associated factors (TRAFs) comprise a family of adaptor proteins that act as downstream signal transducers of the TNF receptor superfamily and the Toll/interleukin-1 receptor family. The mammalian TRAFs 2, 5 and 6 are known to activate JNK- and NF-kappaB signaling pathways, whereas the function of the other three mammalian family members, TRAF 1, 3 and 4 is less well characterized. Vertebrate TRAFs have a very similar structure with the exception of TRAF1: aside the characteristic C-terminal TRAF domain, they share a N-terminal RING finger followed by five or, in the case of TRAF4, seven regularly spaced zinc fingers. Two TRAF homologues are present in the genome of Drosophila melanogaster, DTRAF1 and DTRAF2 (also known as DTRAF6) and both have been implicated in the Toll-receptor pathways leading to the activation of NF-kappaB and JNK. DTRAF1 is most closely related to mammalian TRAF4 which is predominantly expressed during nervous system development and in ephitelial progenitor cells. In order to gain insight into possible roles of DTRAF1 during development, we have performed a detailed transcriptional analysis of the gene at various embryonic and larval stages. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.
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