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Outer membrane permeability and porin proteins of Yersinia enterocolitica
1Institute of Microbiology, Warsaw University, Poland.
FEMS Microbiology Letters
|August 1, 1990
Abstract:
In intact cells of Yersinia enterocolitica, loss of the YompF protein reduced the outer membrane permeability parameters for two beta-lactam compounds, cephaloridine and nitrocefin. Additional loss of the outer membrane YompC protein resulted in further reductions in the permeability parameters. We conclude that the outer membrane proteins YompC and YompF of Y. enterocolitica are porin proteins.
Insights
Yersinia enterocolitica outer membrane proteins YompC and YompF act as porins. Their absence significantly reduces the cell
Area of Science:
- Microbiology
- Molecular Biology
- Biochemistry
Background:
- Yersinia enterocolitica is a Gram-negative bacterium.
- Outer membrane proteins play crucial roles in bacterial physiology.
- Porins are essential outer membrane proteins involved in nutrient transport and permeability.
Purpose of the Study:
- To investigate the function of YompC and YompF proteins in Yersinia enterocolitica.
- To determine the role of YompC and YompF in outer membrane permeability.
Main Methods:
- Analysis of Yersinia enterocolitica mutants lacking YompF and YompC proteins.
- Measurement of outer membrane permeability parameters using beta-lactam compounds (cephaloridine and nitrocefin).
Main Results:
- Loss of YompF protein reduced outer membrane permeability to cephaloridine and nitrocefin.
- Simultaneous loss of YompC and YompF proteins resulted in further decreased permeability.
- These findings indicate a significant role for YompC and YompF in governing outer membrane transport.
Conclusions:
- YompC and YompF are identified as porin proteins in Yersinia enterocolitica.
- These porins are critical for the passage of beta-lactam antibiotics across the bacterial outer membrane.
- Understanding these porins can inform strategies against Yersinia infections.