Properties and Crystal Structure of Methylenetetrahydrofolate Reductase from Thermus thermophilus HB8
Author Information
Author(s): Igari Sayaka, Ohtaki Akashi, Yamanaka Yasuaki, Sato Yuichi, Yohda Masafumi, Odaka Masafumi, Noguchi Keiichi, Yamada Kazuhiro
Primary Institution: Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Koganei, Tokyo, Japan
Hypothesis
The properties of thermostable MTHFRs have not yet been reported.
Conclusion
Thermus MTHFR may serve as a useful model for studying human MTHFR due to its unique structural properties.
Supporting Evidence
- MTHFR from Thermus thermophilus HB8 has been expressed in E. coli and purified.
- The crystal structure of the holo-subunit was similar to E. coli MTHFR.
- Different intersubunit interfaces were observed in the heterodimer and homodimer forms.
- Thermus MTHFR showed ≈50% activity per FAD-bound subunit in folate-dependent reactions.
- The study suggests that Thermus MTHFR may model human enzyme properties.
Takeaway
This study looks at an enzyme from a heat-loving bacteria that helps with important body processes, showing how it works and how it might help us understand similar enzymes in humans.
Methodology
The enzyme was expressed in E. coli, purified, and its crystal structure was analyzed.
Limitations
The study primarily focuses on a single enzyme from one organism, which may not fully represent the behavior of human MTHFR.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website