Results 171 to 180 of about 5,933 (213)

Tunnel structures in Acetobacter xylinum

International Journal of Biological Macromolecules, 1988
Abstract The architecture of cellulose pellicles produced by the bacterium Acetobacter xylinum was observed using a scanning electron microscope. The existence of tunnels with regular orientation argues for some kind of coordination during the pellicle formation and against a random formation of cellulose microfibrils.
N.S. Thompson, J.A. Carlson, H.M. Kaustinen, K.I. Uhlin   +3 more
openaire   +1 more source

Structure of cellulose Acetobacter xylinum

Crystallography Reports, 2003
The data are presented on optimization of cellulose synthesis by Acetobacter xylinum (strain VKM V-880) and the structural characteristics of A. xylinum cellulose gel film synthesized during static cultivation. The structural changes caused by the removal of water from gel films are established and the structural organization of macromolecular chains ...
Klechkovskaya, VV, Baklagina, YG, Stepina, ND, Khripunov, AK, Buffat, PA, Suvorova, EI, Zanaveskina, IS, Tkachenko, AA, Gladchenko, SV   +8 more
openaire   +2 more sources

Transglucosidase Activity in Acetobacter xylinum

Nature, 1960
CELLS of Acetobacter xylinum are known to produce cellulose. This synthesis has been demonstrated in resting fresh and lyophilized cells1,2. Enzymic synthesis of cellulose by preparations from A. xylinum has been shown with the aid of tracer techniques3,4 and electronmicrography5.
openaire   +2 more sources

Helical, non-cellulosic microfibrils from acetobacter xylinum and acetobacter suboxydans

Biochimica et Biophysica Acta, 1962
Abstract Helical, non-cellulosic microfibrils are formed in water from substance(s) soluble in 80% ethanol, which are concentrated in (or close to) the cell walls of Acetobacter xylinum and Acetobacter suboxydans but not in those of Acetobacter acetigenum or Acetobacter aceti .
A L, CURRIE, N, RAMANATHAN, J R, COLVIN
openaire   +2 more sources

Phosphorylation coupled to malate oxidation in Acetobacter xylinum

Biochemical and Biophysical Research Communications, 1966
Abstract The oxidation of malate to oxaloacetate in A. xylinum has been shown to be irreversible. It is catalyzed by a FAD flavoprotein which is not affected by high concentrations of oxaloacetate and is linked to the cytochrome chain by a vitamin K-like compound ( Benziman and Abeliovitz, 1964 ; Benziman and Galenter, 1964 ; Benziman and ...
M, Benziman, L, Levy
openaire   +2 more sources

THE FORMATION OF CELLULOSE MICROFIBRILS IN SUSPENSIONS OF ACETOBACTER XYLINUM

Canadian Journal of Microbiology, 1960
Formation of cellulose microfibrils from precursors elaborated by Acetobacter xylinum takes place remote from the cell surface and without an extensive, amorphous, intermediate high polymer. The microfibrils increase in mass by growth only at one or both tips. The rate of microfibrillar growth per bacterial cell at 25 °C is constant at 0.1 μ per minute
J R, COLVIN, M, BEER
openaire   +2 more sources

Transformation of Acetobacter xylinum with plasmid DNA by electroporation

Plasmid, 1992
Genetic analysis of Acetobacter xylinum, a cellulose-synthesizing bacterium, has been limited by lack of a successful transformation method. Transformation of A. xylinum was attempted using two broad-host-range plasmids (pUCD2 and pRK248) and a variety of transformation methods.
P E, Hall, S M, Anderson, D M, Johnston, R E, Cannon   +3 more
openaire   +2 more sources

Synthesis of Cellulose by Resting Cells of Acetobacter xylinum

Nature, 1947
IN plants, cellulose is formed intracellularly, by a process the chemistry of which is completely unknown. Microscopic evidence adduced by Farr suggests that the conditions of cellulose formation in green plants are very complex1,2. But in cultures of the bacterium Acetobacter xylinum, true cellulose3,4,5,6 in the form of a mesh of beautifully defined ...
S, HESTRIN, M, ASCHNER, J, MAGER
openaire   +2 more sources

Synthesis of Cellulose in Ethanol Extracts of Acetobacter xylinum

Nature, 1959
FORMATION of bacterial cellulose in cell-free fractions of homogenates of Acetobacter xylinum, supplemented by either adenosine triphosphate1,2 or uridine diphosphoglucose3, has recently been reported. Such homogenate fractions are necessarily complex, and unequivocal identification of the immediate precursor of cellulose might be easier if a cell-free
openaire   +2 more sources

Synthesis of mannosyl cellobiose diphosphate prenol in Acetobacter xylinum

Archives of Biochemistry and Biophysics, 1980
Abstract The enzymatic synthesis of a β-mannosyl (1 → 3) β-glucosyl (1 → 4) α-glucose-1-pyrophosphate-prenol (allylic) by Acetobacter xylinum preparations is described. Glucose pyrophosphate lipid, already known to be formed from UDP-glucose and endogenous phosphate lipid, is demonstrated to accept another glucose from UDP-glucose to give a ...
R O, Couso, L, Ielpi, R C, García, M A, Dankert   +3 more
openaire   +2 more sources