Journal
PLOS ONE
Volume 3, Issue 8, Pages -Publisher
PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0002457
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Funding
- JGI
- Human Frontier Science Program [RGP 0221]
- Deutsche Forschungsgemeinschaft [Schi 277/20-2]
- National Science Foundation [RR 19895, Graduate Research Fellowship]
- Yale University Life Sciences Computing Center [RR 19895]
- NIH [RR 19895]
- University of California, Lawrence Livermore National Laboratory
- Lawrence Berkeley National Laboratory
- Los Alamos National Laboratory
- Gordon and Betty Moore Foundation
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The evolution of ANTP genes in the Metazoa has been the subject of conflicting hypotheses derived from full or partial gene sequences and genomic organization in higher animals. Whole genome sequences have recently filled in some crucial gaps for the basal metazoan phyla Cnidaria and Porifera. Here we analyze the complete genome of Trichoplax adhaerens, representing the basal metazoan phylum Placozoa, for its set of ANTP class genes. The Trichoplax genome encodes representatives of Hox/ParaHox-like, NKL, and extended Hox genes. This repertoire possibly mirrors the condition of a hypothetical cnidarian-bilaterian ancestor. The evolution of the cnidarian and bilaterian ANTP gene repertoires can be deduced by a limited number of cis-duplications of NKL and extended Hox'' genes and the presence of a single ancestral ProtoHox'' gene.
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