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Updated: Mar 20, 2026
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Detection of Small GTPase Prenylation and GTP Binding Using Membrane Fractionation and GTPase-linked Immunosorbent Assay
Published on: November 11, 2018
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Small GTPases
David J Reiner1, Erik A Lundquist2
1Institute of Biosciences and Technology, Texas A&M Health Science Center, Houston, TX USA.
Wormbook : the Online Review of C. Elegans Biology
|May 25, 2016
Summary
Small guanosine triphosphatases (GTPases) are crucial molecular switches in cell biology. This study compares small GTPase complements in C. elegans and mammals, revealing conserved and unique members.
Area of Science:
- Cell Biology
- Molecular Biology
- Genomics
Background:
- Small guanosine triphosphatases (GTPases) are essential regulators in cellular processes.
- They function as molecular switches, controlling cell signaling through GTP/GDP binding.
- The Ras superfamily, including Ras, Rho, Rab, Arf, and Ran families, is conserved across eukaryotes.
Purpose of the Study:
- To provide an overview of small GTPase biology.
- To compare the small GTPase repertoire in Caenorhabditis elegans with mammalian counterparts.
- To identify and discuss atypical nematode small GTPases.
Main Methods:
- Comparative genomics analysis of small GTPase families.
- Bioinformatic survey of the C. elegans genome for small GTPase identification.
- Literature review of small GTPase functions and evolution.
Main Results:
- C. elegans possesses a complement of small GTPases comparable to other eukaryotes.
- Functional diversification of small GTPase families has occurred throughout evolution.
- Atypical nematode-specific small GTPases were identified, expanding the known repertoire.
Conclusions:
- Small GTPases are fundamental to eukaryotic cell biology with conserved roles.
- Comparative analysis highlights evolutionary adaptations in small GTPase families.
- The study expands the understanding of small GTPase diversity and function in nematodes.
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