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Convergent evolution of gene networks by single-gene duplications in higher eukaryotes.


ABSTRACT: By combining phylogenetic, proteomic and structural information, we have elucidated the evolutionary driving forces for the gene-regulatory interaction networks of basic helix-loop-helix transcription factors. We infer that recurrent events of single-gene duplication and domain rearrangement repeatedly gave rise to distinct networks with almost identical hub-based topologies, and multiple activators and repressors. We thus provide the first empirical evidence for scale-free protein networks emerging through single-gene duplications, the dominant importance of molecular modularity in the bottom-up construction of complex biological entities, and the convergent evolution of networks.

SUBMITTER: Amoutzias GD 

PROVIDER: S-EPMC1299007 | biostudies-other | 2004 Mar

REPOSITORIES: biostudies-other

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Convergent evolution of gene networks by single-gene duplications in higher eukaryotes.

Amoutzias Gregory D GD   Robertson David L DL   Oliver Stephen G SG   Bornberg-Bauer Erich E  

EMBO reports 20040213 3


By combining phylogenetic, proteomic and structural information, we have elucidated the evolutionary driving forces for the gene-regulatory interaction networks of basic helix-loop-helix transcription factors. We infer that recurrent events of single-gene duplication and domain rearrangement repeatedly gave rise to distinct networks with almost identical hub-based topologies, and multiple activators and repressors. We thus provide the first empirical evidence for scale-free protein networks emer  ...[more]

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