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Evolution and the structural domains of proteins
1Departamento de Química, Facultad de Ciencias, Universidad de Chile, Santiago, Chile.
Archivos De Biologia Y Medicina Experimentales
|January 1, 1987
Summary
Protein domains are building blocks for protein evolution. Exon recombination of these domains may explain the development of new protein functions, as seen in phosphofructokinase evolution.
Area of Science:
- Molecular Biology
- Protein Evolution
- Bioinformatics
Background:
- Globular proteins are composed of fundamental units known as domains.
- Protein domains are linked to protein function, folding, and evolutionary processes.
- Similar domains in various proteins suggest divergent evolution from ancestral genes.
Purpose of the Study:
- To explore the modular mechanism of large protein construction.
- To investigate the role of exon recombination in protein evolution.
- To assess the evolution of phosphofructokinase from a domain-based perspective.
Main Methods:
- Comparative analysis of protein domain structures.
- Examination of gene duplication and fusion events.
- Assessment of exon-intron structures in relation to protein domains.
Main Results:
- Large proteins are assembled modularly using domains as building blocks.
- Exon recombination, corresponding to protein domains, facilitates the emergence of novel protein functions.
- The evolution of phosphofructokinase is consistent with this domain-based, modular evolutionary model.
Conclusions:
- Protein domains are key units in protein evolution and functional diversification.
- Exon recombination provides a mechanism for generating protein novelty.
- The modular assembly of proteins through domains offers insights into evolutionary pathways.