The Tribolium decapentaplegic gene is similar in sequence, structure, and expression to the Drosophila dpp gene

The Tribolium decapentaplegic gene is similar in sequence, structure, and expression to the Drosophila dpp gene
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Tribolium decapentaplegic 基因在序列、结构和表达方面与果蝇 dpp 基因相似

DOI:
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发表时间:
1996
期刊:
Development, Genes and Evolution
影响因子:
--
通讯作者:
J. Doctor
J. Doctor
中科院分区:
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文献类型:
--
作者:
J. Sanchez;M. Pletcher;R. L. Bennett;Susan J. Brown;Tulasi J. Dandamudi;R. Denell;J. Doctor

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摘要我们对赤拟谷盗Tribolium castaneum中的转化生长因子-β(TGF-β)超家族成员进行了鉴定,以研究昆虫发育过程中TGF-β样基因结构和功能的进化保守性。 在赤拟谷盗属中分离到TGF-β超家族的十肢麻痹样基因(Tc dpp),其在序列、组织和表达上与黑腹果蝇dpp基因(Dm dpp)相似。保守的特征包括在编码的多肽的前结构域和成熟结构域两者中的高度序列相似性。此外,蛋白质编码区内内含子的位置在Tc dpp、Dm dpp和人类TGF-β超家族的两种骨形态发生蛋白基因BMP 2和BMP 4中是保守的。一致的背侧转录因子的结合位点被发现在这个内含子中的Tc DPP类似的内含子中的几个背侧结合位点的Dm DPP的位置。在胚胎发生过程中,Tc dpp在胚盘阶段的浆膜细胞的前帽中、在发育和延伸的胚带的侧边缘的背外胚层中以及在发育中的胚胎附属物的远端中表达。胚胎表达的几个方面,在苍蝇和甲虫中相似,表明在这些远亲昆虫的发育过程中,dpp在细胞通讯中的保守作用。
Abstract We are characterizing members of the Transforming Growth Factor-β (TGF-β) superfamily in the red flour beetle, Tribolium castaneum, in order to examine the evolutionary conservation of the structure and function of TGF-β-like genes during insect development. A decapentaplegic-like gene of the TGF-β superfamily was isolated in Tribolium (Tc dpp) that is similar in sequence, organization, and expression to the Drosophila melanogaster dpp gene (Dm dpp). Conserved features include a high degree of sequence similarity in both the pro-domain and mature domains of the encoded polypeptide. In addition, the position of an intron within the protein-coding region is conserved in Tc dpp, Dm dpp, and two bone morphogenetic protein genes of the TGF-β superfamily in humans, BMP2 and BMP4. Consensus binding sites for the dorsal transcription factor are found within this intron in Tc dpp similar to the intronic location of several dorsal binding sites in Dm dpp. During embryogenesis, Tc dpp is expressed in an anterior cap of serosa cells at the blastoderm stage, in the dorsal ectoderm at the lateral edges of the developing and extended germ band, and in the distal tips of developing embryonic appendages. Several aspects of embryonic expression, similar in both flies and beetles, suggest conserved roles for dpp in cellular communication during the development of these distantly related insects.
TGF-β家族成员(十肢瘫痪)活性的局部增强和抑制对于果蝇胚胎中背腹模式的形成是必要的。
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