THE NECESSITY FOR DIRECT CONTACT IN SULFUR OXIDATION BY THIOBACILLUS THIOOXIDANS

Abstract
Evidence is given that the first necessary step in the oxidation of elemental sulfur by this organism is a direct contact between the bacterial cell and the sulfur particle. It is neither necessary nor probable that the organism can render S soluble in the medium. This auto-trophic organism is shown to be in accord with the generalization that no cell can obtain energy from oxidations which are not carried out at or within its boundaries.

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