The Hox8 of the hemichordate Balanoglossus misakiensis

The Hox8 of the hemichordate Balanoglossus misakiensis
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半索动物 Balanoglossus misakiensis 的 Hox8

DOI:
10.1007/s00427-009-0297-5
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发表时间:
2009
影响因子:
2.4
通讯作者:
and Masaaki Yamaguchi
and Masaaki Yamaguchi
中科院分区:
生物学4区
文献类型:
--
作者:
Makoto Urata;Jun Tsuchimoto;Kinya Yasui;and Masaaki Yamaguchi

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后口动物包括一个单系群的动物,包括脊索动物、异盘虫和由棘皮动物和半脊索动物组成的Ambulacraria。祖先的脊索动物可能有14个Hoxgenes线性排列沿着染色体,与后6个基因显示出独立的复制相比,原口类。相比之下,步足动物的特征是后Hox基因的重复,导致三个基因被称为Hox 11/13 a,Hox 11/13 b和Hox 11/13 c。本研究从半索动物Balanoglossus misakiensis中分离到12个Hox基因,并发现了一个在半索动物中未见报道的Hox基因。额外的B。通过对misakiensisHoxgenes基因的同源结构域和六肽基序的分析,并与紫球海胆Hoxgenes基因进行比较,推测misakiensisHoxgenes基因为Hox 8。我们的数据表明,棘皮动物和半索动物的祖先可能有一个完整的12 Hoxgenes。
Deuterostomes comprise a monophyletic group of animals that include chordates, xenoturbellids, and the Ambulacraria, which consists of echinoderms and hemichordates. The ancestral chordate probably had 14Hoxgenes aligned linearly along the chromosome, with the posterior six genes showing an independent duplication compared to protostomes. In contrast, ambulacrarians are characterized by a duplication of the posteriorHoxgenes, resulting in three genes known asHox11/13a,Hox11/13b, andHox11/13c. Here, we isolated 12Hoxgenes from the hemichordateBalanoglossus misakiensisand found an extraHoxgene that has not been reported in hemichordates. The extraB. misakiensisgene was suggested to beHox8from paralog-characteristic residues in its hexapepetide motif and homeodomain and a comparison withStrongylocentrotus purpuratus Hoxgenes. Our data suggest that the ancestor of echinoderms and hemichordates may have had a full complement of 12Hoxgenes.
棘皮动物的进化可能不需要修改祖先后口动物 HOX 基因簇:棘皮动物中 PG4 和 PG5 Hox 直向同源物的首次报告
DOI: 10.1007/s00427-003-0355-3
发表时间: 2003
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作者:
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发表时间: 2004
期刊: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
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发表时间: 2008-07-15
影响因子: 2.2
作者:
Amemiya, Chris T.;Prohaska, Sonja J.;Stadler, Peter F.
通讯作者: Stadler, Peter F.