+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Chain conformation of deacetylated beijeran calcium salt

, : Chain conformation of deacetylated beijeran calcium salt. Bioscience, Biotechnology, and Biochemistry 60(3): 551-553

A well-defined X-ray fiber diffraction pattern was obtained from a stretched film of the calcium salt of a new uronic acid containing polysaccharide designated as beijeran in the deacetylated form, poly( fwdarw 3)alpha-D-GalUA-(1 fwdarw 3)-beta-L-Rham-(1 fwdarw 3)-alpha-D-Glc-(1 fwdarw ). The oriented film showed no diffraction spots, indicating it to be amorphous. However, when annealed at high temperature, the film exhibited high crystallinity. All the visible reflections could be indexed in terms of a monoclinic unit cell with the following dimensions: a = 1.297; b = 1.676; c (fiber axis) = 2.509 nm; and gamma = 106.50 degree . The length of the fiber axis and the absence of meridional reflections at any odd layer line indicate that an extended two-fold helical conformation was made up of two trisaccharide residues.


PMID: 8901123

DOI: 10.1271/bbb.60.551

Other references

Toohey, M.; Morrison, F., 1981: Light trap catches of June beetles (Phyllophaga spp.) (Coleoptera: Scarabaeidae) in Quebec Canada, geographic distribution, phytophagous pests. Annales Societe entomologique du Quebec 26(3): 212-214

Anonymous, 1965: Zoologica Africana. The first issue of this new publication (March 1965) contains the Proceedings of a Symposium on African Mammals held at Salisbury, Rhodesia, in Sep. 1963, under the auspices of the Zoological Society of Southern Africa. The proceedings comprise 5...

Ruiz Baliu, A.; Fernandez Triana, J.L., 1996: New distribution record of Scapteriscus abbreviatus Scudder Orthoptera Gryllotalpoidea Gryllotalpidae in Cuba Nuevo registro para la distribucion geografica de Scapteriscus abbreviatus Scudder Orthoptera Gryllotalpoidea Gryllotalpidae en Cuba. Boletin de Entomologia Venezolana. Julio; 111: 61-62

Adam, S.E.; Al-Yahya, M.A.; Al-Farhan, A.H., 2001: Combined toxicity of Cassia senna and Citrullus colocynthis in rats. The rats fed diet containing 10% Cassia senna or 10% Citrullus colocynthis ripe fruits for 6 weeks showed the following signs of body weight loss, inefficiency of feed utilization, diarrhoea, ruffled hair and enterohepatonephrotoxicity. Rats fed a...

Hotz, M.M., 1969: Pre- and early postoperative growth-guidance in cleft lip and palate cases by maxillary orthopedics (an alternative procedure to primary bone-grafting). Cleft Palate Journal 6: 368-372

Nessel, Rj, 1983: Regulatory clearance Animal health products, drugs. Formulation of veterinary dosage forms edited by Jack Blodinger: 285

Cooper, I.; Lord, T.; Tice, P.A., 1995: Hydrolysis studies on oleamide in simulated gastrointestinal fluids. Hydrolysis studies using simulated gastrointestinal fluids have been performed on oleamide, an important fatty acid amide slip additive used in plastics food packaging. Experiments have been conducted using the simulated gastrointestinal fluids, s...

Floss, E.L., 1981: Cultural traits in oat cultivation. Cultivation of oats in Rio Grande do Sul is discussed in relation to weed control, pest and disease control and harvesting for grain, hay and silage.

Koumakpayi, I.H.;, C.; Mes-Masson, A.; Saad, F., 2016: ErbB/PI3K/Akt/NF-kappaB pathway analysis in prostate cancer tissues by hierarchical clustering analysis (HCA). NlmCategory="UNASSIGNED">22087 Background: The PI3K/Akt/NF-κB pathway activation is central to prostate cancer progression and therefore an attractive therapeutic target. There is in vitro evidence that the ErbB family of epidermal g...

Volkovich, T.A., 1997: Effect of constant and variable temperature on diapause induction in the lacewing Chrysopa phyllochroma Wesm. (Neuroptera, Chrysopidae). The physiological state of the prepupae of Chrysopa phyllochroma is determined by the photoperiodic conditions at the stage of the 3rd (last) instar. For diapause induction in 50% of the prepupae in the Belgorod (Russia) population of the lacewing...