Journal
CELLULAR AND MOLECULAR LIFE SCIENCES
Volume 65, Issue 19, Pages 3000-3018Publisher
SPRINGER BASEL AG
DOI: 10.1007/s00018-008-8138-7
Keywords
transcription factor; Sox; Sry; high-mobility-group; evolution; redundancy; multicellularity; speciesspecificity
Categories
Funding
- Deutsche Forschungsgemeinschaft
- Fonds der Chemischen Industrie
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Transcription factors of the Sox family arose around the advent of multicellularity in animals, arguing that their ability to regulate the expression of extracellular matrix, cell adhesion and signaling molecules may have been instrumental in the generation of metazoans. In particular, during vertebrate evolution, the Sox family experienced a phase of expansion that led to the appearance of groups of highly homologous Sox proteins and the division of existing Sox protein functions among group members. It furthermore allowed Sox transcription factors to acquire numerous novel functions. These past events of subfunctionalization and neofunctionalization can still be recognized today in all groups of the Sox family. They have led to partial functional redundancies, but also to interesting species-specific variations in the developmental roles of Sox proteins as shown here for the SoxB and the SoxE groups.
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