MspA provides the main hydrophilic pathway through the cell wall of Mycobacterium smegmatis.

@article{Stahl2001MspAPT,
  title={MspA provides the main hydrophilic pathway through the cell wall of Mycobacterium smegmatis.},
  author={Cordula Stahl and Susanne Kubetzko and I Kaps and Silke Seeber and Harald Engelhardt and Michael Niederweis},
  journal={Molecular microbiology},
  year={2001},
  volume={40 2},
  pages={451-64}
}
MspA is an extremely stable, oligomeric porin from Mycobacterium smegmatis that forms water-filled channels in vitro. Immunogold electron microscopy and an enzyme-linked immunosorbent assay demonstrated that MspA is localized in the cell wall. An mspA deletion mutant did not synthesize detectable amounts of mspA mRNA, as revealed by amplification using mspA-specific primers and reverse-transcribed RNA. Detergent extracts of the DeltamspA mutant exhibited a significantly lower porin activity in… CONTINUE READING
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