The relationships between the isoelectric point and protein characteristics
Author Information
Author(s): Kiraga Joanna, Mackiewicz Pawel, Mackiewicz Dorota, Kowalczuk Maria, Biecek Przemysław, Polak Natalia, Smolarczyk Kamila, Dudek Miroslaw R, Cebrat Stanislaw
Primary Institution: Department of Genomics, University of Wrocław
Hypothesis
The study investigates the correlation between the isoelectric point (pI) of proteins and various factors such as protein length, taxonomy, and ecology of organisms.
Conclusion
The distribution of pI of proteins in proteomes shows clear relationships with length of proteins, subcellular localization, taxonomy, and ecology of organisms.
Supporting Evidence
- Significant correlation was found in more than 95% of proteomes between protein length and pI.
- Plastids, viruses, and plasmids encode more basic proteomes.
- Host-associated organisms have more basic proteomes than free-living ones.
- The higher rate of mutations in intracellular parasites is linked to the basicity of their proteomes.
- Salinity is positively correlated with the acidity of proteomes.
Takeaway
This study looks at how the acidity or basicity of proteins relates to their length and the type of organism they come from.
Methodology
The study analyzed 1784 proteomes from various organisms and calculated the isoelectric points of proteins, examining correlations with protein length and ecological factors.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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