Evolution of Milk Proteins in Mice
Author Information
Author(s): Boumahrou Nisrine, Bevilacqua Claudia, Beauvallet Christian, Miranda Guy, Andrei Sanda, Rebours Emmanuelle, Panthier Jean-Jacques, Bellier Sylvain, Martin Patrice
Primary Institution: INRA, UR1313 Génétique animale et Biologie intégrative
Hypothesis
How do major milk proteins differ between Mus musculus and Mus spretus mouse species?
Conclusion
The study found that SNP frequencies in milk protein-encoding genes between Mus spretus and Mus musculus are significantly higher than previously reported, but protein structure remains largely unaffected.
Supporting Evidence
- Mus spretus strains show a high level of genotypic and phenotypic variability.
- Milk protein concentration was significantly lower in SEG/Pas compared to C57BL/6J.
- Nine major proteins were identified in both milks, with distinct behaviors observed.
Takeaway
This study looked at the milk proteins in two types of mice and found that one type has a lot more differences in its milk proteins than the other, but these differences don't change how the proteins work.
Methodology
The study used genoproteomic approaches including RP-HPLC, bi-dimensional electrophoresis, and MALDI-Tof mass spectrometry to analyze milk protein polymorphisms.
Limitations
The study is limited by the availability of genome sequence data for Mus spretus, which is less comprehensive than that for Mus musculus.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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