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2009 NOV 29 ... the journal Cerebral Cortex.This gene variant limits the availability of a protein called brain-derived neurotrophic factor during activity. BDNF keeps memory strong by ... it can act in your favor. The variant brings a different balance between flexibility and stability."A test to determine whether someone has the gene variant is not ...
2009 NOV 24 ... "Polypyrimidine tract binding protein (PTB) is a widely expressed RNA binding protein. In the nucleus PTB regulates the ... regulates the splicing of alternative exons, while in the cytoplasm it can affect mRNA stability, translation, and localization," scientists writing in the journal Molecular and ...
2009 NOV 24 ... analysis shows that sufficiently strong coupling among the calcium, membrane, and protein dynamics may induce robust traveling waves on the membrane. This result was checked for ... polymerization, membrane curvature, and the flux of calcium through the membrane. Linear stability analysis shows that sufficiently strong coupling among the calcium, membrane, and ...
2009 NOV 25 ... of trans-electropore ionic and aqueous flow, cortical flexibility, transmembrane protein mobility, and active cellular wound healing mechanisms."Kennedy and ... has been suggested in several experimental studies. The electropore radius at which stability is achieved is a function of the characteristic radii of locally constrained regions ...
2009 NOV 24 ... was slightly decreased, and activation of c-Jun N-terminal kinase, a mitogen-activated protein kinase, was reduced in MS11hfq-infected epithelial cells in comparison with wild ... Hfq contributes indirectly to virulence by binding to riboregulators that modulate the stability or translation efficiency of RNA transcripts." "To characterize the role ...
2009 NOV 23 ... classical PKU," scientists in Serbia report. "We analyzed p.S231F PAH protein in prokaryotic (Escherichia coli) and eukaryotic expression system (hepatoma cells). In ... should be classified as a functionally null PAH gene mutation as it drastically reduces stability and activity of the PAH enzyme in vitro." Stojiljkovic and colleagues ...
2009 NOV 23 ... Two mutants stimulated interleukin-8 (IL-8) expression at both the mRNA level and protein level just as equally effective as the wild-type PBEF did. These effects were due to the ... wild-type PBEF did. These effects were due to the increased transcription, not the mRNA stability, of the IL-8 gene. Reporter gene assays and gel shift experiments indicated that AP-1 ...
2009 NOV 23 ... have shown that expression of the excision gene operon is controlled by the regulatory protein RteC. Accordingly, it was possible that RteC was also regulating tra gene expression and ... of the excision proteins. The repressive effect of RteR was not the result of decreased stability of the tra mRNA. Instead, RteR appears to be modulating the level of tra gene expression ...
2009 NOV 24 ... in Ningbo, People's Republic of China report. "After the samples protein precipitation with 10% (v/v) methanol in acetonitrile and cleaning with solid-phase ... The limit of detection, the limit of quantification, recovery, linearity, precision, and stability were well validated. The cracking approach of characteristic fragments for pindone and ...
2009 NOV 27 ... osmolytes into three different classes based on their effects on kinetic parameters and protein stability. (a) Polyhydric alcohols and amino acids and their derivatives do not have significant ...
2009 NOV 23 ... "Silk fibroin derived from Bombyx mori is a biomacromolecular protein with outstanding biocompatibility. When it was dissolved in highly concentrated CaCl2 ... nanoparticles, the resistance of the modified insulin to trypsin digestion and in vitro stability in human serum were greatly enhanced as compared with insulin alone. The results in ...
2009 NOV 23 ... and in neuronal survival. These effects are mediated, to a great extent, by changes in protein synthesis." "We conducted a gel-based proteome profiling of the long-term ... in neurite compartments suggesting that the neurotrophin may act by regulating mRNA stability and thereby affecting the dendritic protein content." Manadas and ...
2009 NOV 23 ... researchers in South Korea report. "Studies on bone morphogenic protein-2 (BMP2)-induced transdifferentiation of murine C2C12 cells, a myogenic lineage ... as ubiquitination related proteins were newly identified, and its inhibitor reduced the stability of phosphorylated Smad1, and the BMP2-induced ALP levels of C2C12 cells were detected. ...
2009 NOV 23 ... appropriate intracellular iron concentrations. The degradation of iron regulatory protein 2 (IRP2) in iron-replete cells is a key event in this pathway, but the E3 ubiquitin ... pathway that couples IRP2 degradation to intracellular iron levels through the stability and activity of FBXL5." Vashisht and colleagues published their study in ...
2009 NOV 24 ... "Steered molecular dynamics simulations area tool to examine the energy landscape of protein-protein complexes by applying external forces. Here, we analyze the influence of the ... in Munich, Germany report."With steered molecular dynamics, we probe the stability of the protein-protein complex Barnase-Barstar. The individual proteins are mechanically ...
2009 NOV 23 ... Scientists discuss in 'Utility of C-reactive protein in assessing the disease severity and complications of community-acquired pneumonia' ... for an association between the level of CRP on admission and the time to reach clinical stability (p <0.01)," wrote U. Hohenthal and colleagues, Turku University, Department of ...
2009 NOV 27 ... (XLHED), a condition characterized by defective development of skin appendages. The EDA1 protein displays a proteolytic processing site responsible for its conversion to a soluble form, ... EDAR.""In-frame deletions in the collagen domain reduced the thermal stability of EDA1. Removal of the collagen domain decreased its activity about 100-fold, as ...
2009 NOV 23 ... "We found that an E3 ubiquitin ligase complex containing the FBXL5 protein targets IRP2 for proteasomal degradation. The stability of FBXL5 itself was regulated, ...
