Duplication of the IGFBP-2 Gene in Teleost Fish: Protein Structure and Functionality Conservation and Gene Expression Divergence
2008
Duplication of the IGFBP-2 Gene in Teleost Fish
publication
Evidence: moderate
Author Information
Author(s): Zhou Jianfeng, Li Wenhong, Kamei Hiroyasu, Duan Cunming
Primary Institution: Department of Molecular, Cellular and Developmental Biology, University of Michigan
Hypothesis
How have the IGFBP-2 genes evolved in teleost fish compared to humans?
Conclusion
The study suggests that IGFBP-2 is a conserved regulatory protein that inhibits growth and development by binding to and inhibiting IGF actions.
Supporting Evidence
- Zebrafish have two IGFBP-2 genes that are co-orthologs of the human IGFBP-2 gene.
- Both zebrafish IGFBP-2a and -2b are secreted proteins that bind IGFs.
- Overexpression of IGFBP-2a and -2b in zebrafish embryos caused similar reductions in growth and development.
Takeaway
This study found that fish have two versions of a protein that helps control growth, and both versions work similarly but are used in different ways in the body.
Methodology
The study used comparative genomics, structural analyses, and functional studies in zebrafish to investigate the IGFBP-2 genes.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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