We are analyzing https://link.springer.com/article/10.1007/s00427-003-0321-0.

Title:
A genomewide survey of developmentally relevant genes in Ciona intestinalis | Discover Developmental Biology
Description:
Homeobox-containing genes play crucial roles in various developmental processes, including body-plan specification, pattern formation and cell-type specification. The present study searched the draft genome sequence and cDNA/EST database of the basal chordate Ciona intestinalis to identify 83 homeobox-containing genes in this animal. This number of homeobox genes in the Ciona genome is smaller than that in the Caenorhabditis elegans, Drosophila melanogaster, human and mouse genomes. Of the 83 genes, 76 have possible human orthologues and 7 may be unique to Ciona. The ascidian homeobox genes were classified into 11 classes, including Hox class, NK class, Paired class, POU class, LIM class, TALE class, SIX class, Prox class, Cut class, ZFH class and HNF1 class, according to the classification scheme devised for known homeobox genes. As to the Hox cluster, the Ciona genome contains single copies of each of the paralogous groups, suggesting that there is a single Hox cluster, if any, but genes orthologous to Hox7, 8, 9 and 11 were not found in the genome. In addition, loss of genes had occurred independently in the Ciona lineage and was noticed in Gbx of the EHGbox subclass, Sax, NK3, Vax and vent of the NK class, Cart, Og9, Anf and Mix of the Paired class, POU-I, III, V and VI of the POU class, Lhx6/7 of the LIM class, TGIF of the TALE class, Cux and SATB of the Cut class, and ZFH1 of the ZFH class, which might have reduced the number of Ciona homeobox genes. Interestingly, one of the newly identified Ciona intestinalis genes and its vertebrate counterparts constitute a novel subclass of HNF1 class homeobox genes. Furthermore, evidence for the gene structures and expression of 54 of the 83 homeobox genes was provided by analysis of ESTs, suggesting that cDNAs for these 54 genes are available. The present data thus reveal the repertoire of homeodomain-containing transcription factors in the Ciona genome, which will be useful for future research on the development and evolution of chordates.
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Keywords {🔍}

genes, class, gene, ciona, subclass, proteins, group, genome, homeobox, drosophila, hox, homeodomain, cluster, article, google, scholar, present, pax, pubmed, cas, identified, vertebrate, human, intestinalis, fig, tree, survey, domain, single, cihox, phylogenetic, based, paired, lim, homeodomains, found, suggested, burglin, sequences, candidate, ascidian, pou, bootstrap, protein, evolution, including, development, groups, holland, constructed,

Topics {✒️}

including body-plan specification conserved dna-binding motif dna-binding domain called multiple zn-finger motifs electronic supplementary material hox/parahox cluster integrity genome-wide duplication event pax-type subclass genes encoding zinc-fingers similar previously identified ci-isl previously identified ci-msxb privacy choices/manage cookies human pax2/pax5/pax8 ciona savignyi cs-nkx subclass encode proteins pax family proteins fantom consortium dna-binding properties 1 amino acid substitutions homeobox pax genes extended hox cluster pax gene family pax-type subclass homeobox coding dna play crucial roles 17 zn-finger motifs 23 zn-finger motifs zn-finger motifs including hox class amino acids shared anna di gregorio dna-binding domain predicted homeobox sequence amino acid sequences related subjects central nervous system 60 amino acid residues multiple hox clusters extended hox subclass molecular phylogenetic tree facilitate future research ciona intestinalis larva including s50 genes phylogenetic tree constructed determines sequence specificity anterior neural fates including vertebrate barx1 single hox cluster hox cluster genes ancestral hox cluster

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         headline:A genomewide survey of developmentally relevant genes in Ciona intestinalis
         description:Homeobox-containing genes play crucial roles in various developmental processes, including body-plan specification, pattern formation and cell-type specification. The present study searched the draft genome sequence and cDNA/EST database of the basal chordate Ciona intestinalis to identify 83 homeobox-containing genes in this animal. This number of homeobox genes in the Ciona genome is smaller than that in the Caenorhabditis elegans, Drosophila melanogaster, human and mouse genomes. Of the 83 genes, 76 have possible human orthologues and 7 may be unique to Ciona. The ascidian homeobox genes were classified into 11 classes, including Hox class, NK class, Paired class, POU class, LIM class, TALE class, SIX class, Prox class, Cut class, ZFH class and HNF1 class, according to the classification scheme devised for known homeobox genes. As to the Hox cluster, the Ciona genome contains single copies of each of the paralogous groups, suggesting that there is a single Hox cluster, if any, but genes orthologous to Hox7, 8, 9 and 11 were not found in the genome. In addition, loss of genes had occurred independently in the Ciona lineage and was noticed in Gbx of the EHGbox subclass, Sax, NK3, Vax and vent of the NK class, Cart, Og9, Anf and Mix of the Paired class, POU-I, III, V and VI of the POU class, Lhx6/7 of the LIM class, TGIF of the TALE class, Cux and SATB of the Cut class, and ZFH1 of the ZFH class, which might have reduced the number of Ciona homeobox genes. Interestingly, one of the newly identified Ciona intestinalis genes and its vertebrate counterparts constitute a novel subclass of HNF1 class homeobox genes. Furthermore, evidence for the gene structures and expression of 54 of the 83 homeobox genes was provided by analysis of ESTs, suggesting that cDNAs for these 54 genes are available. The present data thus reveal the repertoire of homeodomain-containing transcription factors in the Ciona genome, which will be useful for future research on the development and evolution of chordates.
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      headline:A genomewide survey of developmentally relevant genes in Ciona intestinalis
      description:Homeobox-containing genes play crucial roles in various developmental processes, including body-plan specification, pattern formation and cell-type specification. The present study searched the draft genome sequence and cDNA/EST database of the basal chordate Ciona intestinalis to identify 83 homeobox-containing genes in this animal. This number of homeobox genes in the Ciona genome is smaller than that in the Caenorhabditis elegans, Drosophila melanogaster, human and mouse genomes. Of the 83 genes, 76 have possible human orthologues and 7 may be unique to Ciona. The ascidian homeobox genes were classified into 11 classes, including Hox class, NK class, Paired class, POU class, LIM class, TALE class, SIX class, Prox class, Cut class, ZFH class and HNF1 class, according to the classification scheme devised for known homeobox genes. As to the Hox cluster, the Ciona genome contains single copies of each of the paralogous groups, suggesting that there is a single Hox cluster, if any, but genes orthologous to Hox7, 8, 9 and 11 were not found in the genome. In addition, loss of genes had occurred independently in the Ciona lineage and was noticed in Gbx of the EHGbox subclass, Sax, NK3, Vax and vent of the NK class, Cart, Og9, Anf and Mix of the Paired class, POU-I, III, V and VI of the POU class, Lhx6/7 of the LIM class, TGIF of the TALE class, Cux and SATB of the Cut class, and ZFH1 of the ZFH class, which might have reduced the number of Ciona homeobox genes. Interestingly, one of the newly identified Ciona intestinalis genes and its vertebrate counterparts constitute a novel subclass of HNF1 class homeobox genes. Furthermore, evidence for the gene structures and expression of 54 of the 83 homeobox genes was provided by analysis of ESTs, suggesting that cDNAs for these 54 genes are available. The present data thus reveal the repertoire of homeodomain-containing transcription factors in the Ciona genome, which will be useful for future research on the development and evolution of chordates.
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         Genomewide survey
         Homeobox genes
         Developmental Biology
         Evolutionary Biology
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         Animal Genetics and Genomics
         Cell Biology
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      name:Department of Zoology, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
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