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Published on: July 21, 2021
Identification and developmental expression of Xenopus laevis SUMO proteases
Yonggang Wang1, Debaditya Mukhopadhyay, Smita Mathew
1Laboratory of Gene Regulation and Development, National Institute of Child Health and Human Development, Bethesda, Maryland, United States of America.
Plos One
|December 31, 2009
Summary
SUMO proteases (Ulp/SENPs) are crucial for development. This study identifies Xenopus laevis SUMO proteases, revealing their distinct roles and developmental regulation, with SENP3 essential for embryonic development and TGF-beta pathway signaling.
Area of Science:
- Molecular Biology
- Developmental Biology
- Biochemistry
Background:
- Small ubiquitin-related modifiers (SUMOs) are essential post-translational modifiers.
- SUMOylation is a dynamic process regulated by Ubiquitin-like protein proteases/Sentrin specific proteases (Ulp/SENPs).
- Understanding Ulp/SENP regulation during development is crucial.
Purpose of the Study:
- To isolate and characterize Ulp/SENPs in Xenopus laevis.
- To investigate the developmental expression patterns of Ulp/SENPs.
- To determine the developmental function of Xenopus SENP3.
Main Methods:
- Isolation and characterization of Ulp/SENPs in Xenopus laevis.
- Enzyme activity assays using SUMO-2 and SUMO-1 derivatives.
- Analysis of Ulp/SENP mRNA and protein expression throughout development.
- Functional analysis of SENP3 using morpholino antisense oligonucleotides.
Main Results:
- Xenopus laevis possesses homologues of mammalian SENP3, 5, 6, 7, and a single SENP1/SENP2 subfamily member (SENP1).
- Xenopus SENP3, 5, 6, and 7 primarily act on SUMO-2/3, while SENP1 acts on all SUMO paralogues.
- Ulp/SENPs exhibit distinct developmental expression patterns, suggesting transcriptional and post-transcriptional regulation.
- SENP3 depletion in Xenopus embryos leads to SUMO-2/3 conjugation defects, developmental abnormalities, and altered TGF-beta pathway gene expression.
Conclusions:
- SUMO proteases are differentially regulated during Xenopus development.
- SENP3 plays a critical role in embryonic development and TGF-beta signaling.
- SUMOylation machinery is essential for normal Xenopus development.
