Predicting Solubility of Plasmodium falciparum Proteins in E. coli
Author Information
Author(s): Sanjay Ahuja, Satpal Ahuja, Qijun Chen, Mats Wahlgren
Primary Institution: Karolinska Institutet
Hypothesis
Can we predict which domains of PfEMP1 will express in a soluble form in E. coli?
Conclusion
The ATS and CIDR α/β domain types are suitable for recombinant expression in E. coli, while all DBL subtypes are poor choices for obtaining soluble protein.
Supporting Evidence
- ATS domains have a mean solubility of 56.7%, making them suitable for expression.
- DBL1α domains have a low solubility of 24.9%, indicating poor expression.
- CIDR1α domains show a mean solubility of 46.8%, which is significantly higher than DBL1α.
- Experimental validation confirmed the computational predictions of solubility.
Takeaway
Some parts of the malaria protein can be made in a way that they dissolve well in bacteria, while others do not dissolve well at all.
Methodology
A computational analysis was performed to predict solubility, validated by experimental methods including colony filtration blot.
Limitations
The study is limited to predictions based on computational models and may not account for all factors affecting protein solubility.
Digital Object Identifier (DOI)
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