Occurrence of free ceramide in Acetobacter xylinum.

Encoding Cellulolytic Activity in Acetobacter xylinum

Recently, it was shown that a cellulose-negative mutant (Cell) ofAcetobacterxylinum ATCC 23769 carried an insertion of an indigenous transposable element (IS1031A) about 500 bp upstream of the bcs operon, required for cellulose synthesis. Here we show that Cell can be complemented by wild-type DNA covering the insertion point. Nucleotide sequencing of this region revealed the presence of two op...

Metabolism of Dicarboxylic Acids in Acetobacter Xylinum.

Benziman, Moshe (The Hebrew University of Jerusalem, Jerusalem, Israel), and A. Abeliovitz. Metabolism of dicarboxylic acids in Acetobacter xylinum. J. Bacteriol. 87:270-277. 1964.-During the oxidation of fumarate or l-malate by whole cells or extracts of Acetobacter xylinum grown on succinate, a keto acid accumulated in the medium in considerable amounts. This acid was identified as oxaloaceti...

Synthesis of Cellulose by Acetobacter Xylinum

Appearance of cellulose microfibrils in the medium of a suspension of cells of Acetobacter xylinum in buffered glucose solution was preceded by a stage during which the cellulose in the medium was amorphous within the available resolution. The size of the vertical axis of the microfibrils of the bacterial cellulose was found on the basis of measurement of shadow length to be only about 16 A. In...

a+Ketoglutarate Dehydrogenase Complex of Acetobacter xylinum

The cu-ketoglutarate dehydrogenase complex of Acetobacterxylinum was purified to homogeneity. It consists of three main polypeptide chains with a total molecular weight of about 2.4 x 106. It catalyzes the overall Mg*+ and thiamin pyrophosphate-dependent, NAD+and CoA-linked oxidative decarboxylation of cY-ketoglutarate, as well as the partial reactions characteristic of the three enzyme compone...

Survey on Nano-fibers from Acetobacter Xylinum