An acidic polysaccharide was obtained from Psychrobacter maritimus 3pS isolated from a Siberian cryopeg sample (Kolyma lowland). The following structure of the tetrasaccharide repeating unit of the polysaccharide was established by sugar analysis along with (1)H and (13)C NMR spectroscopy: →2)-α-L-Rhap-(1→4)-α-D-GalpNAcA-(1→3)-α-D-QuipNAc4NHb-(1→3)-β-D-QuipNAc4NHb-(1→ where D-GalNAcA indicates ...

Two instances of infanticide and cannibalism in polar bears (Ursus maritimus) were observed in SE Svalbard, at Hopen Island. In the first, an adult male killed three young cubs at a den site and consumed one of them. In the second, an adult male actively pursued, killed, and consumed a dependent yearling. Infanticide of dependent polar bear offspring by adult males may be more common in Svalbar...

This paper presents an approach for study of gene expressions based on Markov chain theory. A mathematical model has been proposed to study the transcription of DNA into mRNA and translation of mRNA into Proteins. It is assumed that the DNA, mRNA and Proteins are states in the model and initial state of the system is known. Based on the initial state, the successive states (without state feedba...

Heterologous expression of secondary metabolic pathways is a promising approach for the discovery and characterization of bioactive natural products. Herein we report the first heterologous expression of a natural product from the model marine actinomycete genus Salinispora. Using the recently developed method of yeast-mediated transformation-associated recombination for natural product gene cl...

Sea-ice distribution and duration are declining across the circumpolar range of polar bear (Ursus maritimus), resulting in a reduced access to ice-obligate seals, its primary prey. Consequently, bears may have increased reliance on alternative food sources future. Foraging land is well documented but foraging open water less understood. We report successful depredation thick-billed murre (Uria ...