Discovery of a New Enzyme in Mycobacterial Cell Wall Biosynthesis
Author Information
Author(s): Helen L Birch, Luke J Alderwick, Apoorva Bhatt, Doris Rittmann, Karin Krumbach, Albel Singh, Yu Bai, Todd L Lowary, Lothar Eggeling, Gurdyal S Besra
Primary Institution: School of Biosciences, University of Birmingham
Hypothesis
The study aims to identify new arabinofuranosyltransferases involved in the biosynthesis of mycobacterial arabinogalactan.
Conclusion
The newly identified enzyme AftC is crucial for the synthesis of α(1→3)-linked arabinofuranosyl residues in mycobacterial arabinogalactan.
Supporting Evidence
- Deletion of MSMEG2785 in Mycobacterium smegmatis resulted in altered growth and absence of α(1→3)-linked arabinofuranosyl residues.
- Complementation of the deletion mutant restored the wild-type phenotype.
- AftC was identified as a novel enzyme responsible for the transfer of Araf residues.
Takeaway
Scientists found a new enzyme that helps build a part of the bacteria's protective wall, which could help in creating new medicines against tuberculosis.
Methodology
The study involved genetic deletion of the MSMEG2785 gene in Mycobacterium smegmatis and subsequent analysis of growth and cell wall composition.
Limitations
The study primarily focuses on laboratory strains and may not fully represent the complexities of mycobacterial infections in humans.
Digital Object Identifier (DOI)
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