Some physiologists suggest that this pathway is a mechanism to prevent overreduction of the respiratory pathway, which would lead to the production of toxic free radicals.
The chloroplasts of Arabidopsis thaliana have recently been reported to contain a novel respiratory pathway that converts glycolate directly to glycerate and thus increases productivity by improving photosynthesis in transgenic plants.
The respiratory pathway is concerned principally with the gaseous waste products of metabolism (carbon dioxide and ammonia), which move to the external environment by diffusing from the cells of origin.
Silver NPs work by interfering with the respiratory pathway and cell division.
These relatively fat particles can cause infections in the upper respiratory pathway but do not reach the lungs, where influenza virus can cause life-threatening pneumonia.
Gonzalez et al. ( 2008) corroborated this when they reported that metabolism of glycerol in microbial species unable to synthesize 1,3-pdo takes place through a respiratory pathway that requires an external electron acceptor.
In order to recycle the FAD/FADH2, Y. lipolytica must use ubiquinone as the acceptor, hereby transporting electrons across mitochondrial membrane and into the respiratory pathway (as outlined above).
Comparison of multiple mutants provided evidence for the role of specific proteins from the Mtr respiratory pathway in this process.
In addition to MtrCAB, the S. oneidensis genome encodes modular paralogs (i.e. MtrDEF) of the Mtr respiratory pathway [32].
One γ-proteobacterium, Shewanella oneidensis strain MR-1, a facultative anaerobe, makes the connection to many external terminal electron acceptors [1], [2] through the Mtr respiratory pathway [3].
In response to starvation, wild-type (WT) cells were able to upregulate components of the respiratory pathway and ROS (reactive oxygen species) scavenging enzymes, but atg mutants lacked this synthetic capacity.
