Báo cáo khoa học: Selenium affects biosilica formation in the demosponge Suberites domuncula Effect on gene expression and spicule formation pot

... formation in sponges and in turn skeleton formation in these animals. The final interesting finding for the biotechnological application of silicatein, especially with respect to the understanding ... immunoblot. Gene expression studies The effect of selenium on the expression of the genes encoding selenoprotein M, spicule- associated protein, and silicate...

Ngày tải lên: 30/03/2014, 20:20

... at longer incubation periods. Interestingly, the interruption of TAG synthe- sis preceded the appearance of toxic effects, supporting the notion that it constitutes the initiating event in the process ... response can be divided in two phases according to the intensity and the duration of the stress. An initial adaptive response culminates in the temporary inhibition...

Ngày tải lên: 14/02/2014, 22:20

... intermediate; V, aminoquinol intermediate. In the oxidative half-reaction the ami- noquinol intermediate is converted back to the oxidized enzyme by electron transfer to azurin and elimination ... proton from the iminoquinone intermediate formed in the reductive half-reaction of the catalytic cycle. Results Expression of recombinant AADH Plasmid pRKAADH was introduced via...

Ngày tải lên: 19/02/2014, 07:20

... exposure and positioning of the Tyr304 residue for binding to tyrosine kinases and phos- phatases. On the other hand, tyrosine phosphorylations do not affect the conformation of the PDZ binding motif ... within the SH2-binding element of eph- rinB2(301–333). On the other hand, tyrosine phosphorylation appears to have a profound effect on the b-hairpin conformation of...

Ngày tải lên: 19/02/2014, 12:20

... a DNA fragment containing the Gmlbc3 promoter, the gusA gene, and the pAnos termination sequence by digestion with HindIII; the digestion was followed by self- ligation of the remaining vector to ... responsible for intestinal absorption of vitamin B 12 facilitating its internalization [2,3,5]. Lack or malfunction of this Cbl binder hampers the uptake of the minute amounts of...

Ngày tải lên: 21/02/2014, 00:20

... represented in it. The system merely made no distinction between "all" and "any", and interpreted the final query to mean the But, you are probably thinking, those examples don't ... "yield" is ambiguous if there is both financial and productivity data in the knowledge base), and other complex linguistic phenomena. Let us go on...

Ngày tải lên: 21/02/2014, 20:20

... through the serum stopper into each flask with a syringe, and the flasks were then shaken gently for 24 h at room temperature. The filters were then removed and placed into scintillation vials containing ... role in the maintenance of cell survival, but is also responsible for the up-regulation of glucose metabo- lism and the induction of lipogenesis [37–40]. We hypothesized...

Ngày tải lên: 07/03/2014, 00:20

... provide information on the local repartition of the angles involved in the SRE fos helix bending. Relative effect of bending strain There are several indications of a redistribution of the strains ... core-SRF monomer could establish or not, some links with the second half-site. The main difference between SRE fos and SRE Gfos , on the one hand, and SRE GGfos , on...

Ngày tải lên: 07/03/2014, 09:20

... manifested along classical evolutionary lines, with distinct combinations of replicon architec- ture and replication proteins being found in the three domains of life: the Bacteria, the Eukarya and the ... and C-terminal DNA binding domains (DBDs). In DnaA, the DBD contains a helix-turn-helix; in the archaeal proteins, the DBD has a winged helix domain (reviewed in...

Ngày tải lên: 07/03/2014, 21:20

... verb definition texts begin with to followed by a head verb, or a set of conjoined head verbs. The most common words in the second position in inwansitive verb definitions, along with their ... feet The remaining failures resulted from errors in the creation of the tagged vocabulary (5), non-definitien dictionary lines incorrectly labeled as definition texts (53, and...

Ngày tải lên: 08/03/2014, 18:20