Pseudomonas lindneri

The previously discussed reductions by yeast of isovaleraldehyde to isoamyl alcohol, of p-xyloquinone to p-xylohydroquinone and of sodium thiosulfate to hydrogen sulfide have also been accomplished with Bacterium coli and Bacterium lactis aerogenes. Phytochemical reduction of d,l-valeraldehyde (methylethylacetaldehyde) with Termobacterium mobile Lindner Pseudomonas Lindneri) takes a practically quantitative course and yields an amyl alcohol containing 17 % excess of the dextrorotatory component. Cahill achieved especially favorable results by the reduction of isovaleraldehyde with growing bacteria instead of with their mass cultures. 

The genus Zymomonas belongs to the phylum Proteobacteria, the class Alphapro-teobacteria, the order Sphingomonadales and the family Sphingomonadaceae. Zymomonas to date has only one species, cited as Z. mobilis, which was formerly known as Achromobacter anaerobium, originally isolated from beer (Shimwell, 1936). In the older literature, Zymomonas has been cited as Saccharomonas lindneri and Pseudomonas lindneri (Hornsey, 2013). 

Still another variation is found in Pseudomonas lindneri which ferments 1 mole of glucose to 2 moles each of ethanol and CO2. Enzyme analysis... 

As has been stated, the enzyme of yeast is TPN-specific, as is that of E. coli and mammalian tissues. Although the enzymes of the organisms listed above are active with TPN, it has been reported that in extracts of Pseudomonas lindneri, DPN is also active. It is not clear whether the coenzyme requirement in this organism is really nonspecific or that the activity of DPN may be ascribed to the reaction ... 

Among cells which have both systems, yeast ferments glucose predominantly by the Embden-Meyerhof scheme and Pseudomonas lindneri uses the oxidative pathway. To E. coli having both, as will be discussed below, both mechanisms are quite important in the normal economy of the cell growing on glucose. 

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