Ancient origin of animal U-box ubiquitin ligases
Author Information
Author(s): MarÃn Ignacio
Primary Institution: Instituto de Biomedicina de Valencia. Consejo Superior de Investigaciones CientÃficas (IBV-CSIC). Valencia, Spain
Hypothesis
The study investigates the evolutionary history and patterns of diversification of U-box ubiquitin ligases (UULs) in animals.
Conclusion
The patterns of emergence, diversification, and loss of three unrelated families of ubiquitin ligases indicate that there are underlying, lineage-specific evolutionary forces shaping the complexity of the animal ubiquitin system.
Supporting Evidence
- Six of the seven main UUL-encoding genes found in humans were already present in the ancestor of all current metazoans.
- Monosiga brevicollis contains five additional UUL genes that are not present in animals.
- Losses of UUL-encoding genes are rare along animal evolution, except in nematodes.
Takeaway
This study looks at how certain proteins, called U-box ubiquitin ligases, have evolved in animals over time, showing that many of them have been around since the earliest animals.
Methodology
Phylogenetic and structural analyses were performed using TblastN searches and sequence alignments to study UUL-encoding genes across different species.
Limitations
The study may not cover all UUL-encoding genes in all species, particularly in less-studied lineages.
Digital Object Identifier (DOI)
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