Networks of bZIP Protein-Protein Interactions Diversified Over a Billion Years of Evolution
Author(s)
Reinke, Aaron W.; Baek, Jiyeon; Ashenberg, Orr; Keating, Amy E.
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Differences in biomolecular sequence and function underlie dramatic ranges of appearance and behavior among species. We studied the basic region-leucine zipper (bZIP) transcription factors and quantified bZIP dimerization networks for five metazoan and two single-cell species, measuring interactions in vitro for 2891 protein pairs. Metazoans have a higher proportion of heteromeric bZIP interactions and more network complexity than the single-cell species. The metazoan bZIP interactomes have broadly similar structures, but there has been extensive rewiring of connections compared to the last common ancestor, and each species network is highly distinct. Many metazoan bZIP orthologs and paralogs have strikingly different interaction specificities, and some differences arise from minor sequence changes. Our data show that a shifting landscape of biochemical functions related to signaling and gene expression contributes to species diversity.
Date issued
2013-05Department
Massachusetts Institute of Technology. Department of BiologyJournal
Science
Publisher
American Association for the Advancement of Science (AAAS)
Citation
Reinke, A. W., J. Baek, O. Ashenberg, and A. E. Keating. “Networks of bZIP Protein-Protein Interactions Diversified Over a Billion Years of Evolution.” Science 340, no. 6133 (May 10, 2013): 730–734.
Version: Author's final manuscript
ISSN
0036-8075
1095-9203