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Comparative genomics of nuclear envelope proteins.
Hita Sony Garapati1, Krishnaveni Mishra2
1Department of Biochemistry, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, India.
BMC Genomics
|November 18, 2018
Summary
This study identifies 22 core nuclear envelope (NE) proteins conserved across all eukaryotes, suggesting their presence in the Last Eukaryotic Common Ancestor (LECA). This work reveals conserved NE features and functions from early eukaryotic evolution.
Area of Science:
- Cell Biology
- Evolutionary Biology
- Proteomics
Background:
- The nuclear envelope (NE) is a vital eukaryotic structure regulating nuclear events.
- Its protein composition and function are well-studied in some groups but largely unknown in others.
- Understanding the NE proteome is crucial for comprehending eukaryotic cell evolution.
Purpose of the Study:
- To identify conserved nuclear envelope proteins across all five eukaryotic supergroups.
- To determine the ancestral composition of the nuclear envelope traceable to the Last Eukaryotic Common Ancestor (LECA).
- To investigate lineage-specific and subset-specific evolution of NE proteins.
Main Methods:
- Comparative sequence analysis of proteomes from diverse eukaryotic organisms.
- Bioinformatic identification of proteins localized to the nuclear envelope.
- Phylogenetic analysis to trace protein conservation and evolution.
Main Results:
- Identified 22 proteins constituting the core eukaryotic NE proteome.
- These core proteins are likely inherited from the Last Eukaryotic Common Ancestor (LECA).
- Discovered lineage-specific and subset-specific NE proteins, highlighting evolutionary divergence.
Conclusions:
- The study defines conserved features of the eukaryotic nuclear envelope.
- Provides insights into the ancestral NE proteome and its functionalities at the time of LECA.
- Establishes a foundation for future research on NE evolution and function across eukaryotes.
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