Kinetics of low pressure ammonia oxidation over Rh(111)

The kinetics of the NH3 + O2 reaction over a Rh(111) single crystal catalytic surface was explored in the 10-6 mbar pressure range at tempera-tures between 300-900 K. Selectivity towards N2 and NO products, and reactive sticking coefficients were monitored in situ using differentially pumped quad-rupole mass spectroscopy (QMS). © 2018, Latin American Applied Research

Adenovirus type 5 E4 Orf3 protein targets promyelocytic leukaemia (PML) protein nuclear domains for disruption via a sequence in PML isoform II that is predicted as a protein interaction site by bioinformatic analysis

Human adenovirus type 5 infection causes the disruption of structures in the cell nucleus termed promyelocytic leukaemia (PML) protein nuclear domains or ND10, which contain the PML protein as a critical component. This disruption is achieved through the action of the viral E4 Orf3 protein, which forms track-like nuclear structures that associate with the PML protein. This association is mediated by a direct interaction of Orf3 with a specific PML isoform, PMLII. We show here that the Orf3 interaction properties of PMLII are conferred by a 40 aa residue segment of the unique C-terminal domain of the protein. This segment was sufficient to confer interaction on a heterologous protein. The analysis was informed by prior application of a bioinformatic tool for the prediction of potential protein interaction sites within unstructured protein sequences (predictors of naturally disordered region analysis; PONDR). This tool predicted three potential molecular recognition elements (MoRE) within the C-terminal domain of PMLII, one of which was found to form the core of the Orf3 interaction site, thus demonstrating the utility of this approach. The sequence of the mapped Orf3-binding site on PML protein was found to be relatively poorly conserved across other species; however, the overall organization of MoREs within unstructured sequence was retained, suggesting the potential for conservation of functional interactions

I Say “no”. You Say “it Isn't”. About a New Understanding of the Concept of Negation

Introduction: In our opinion there is still confusion about the exact meaning of the term negation. As a consequence of this the importance of negation in the psychotherapeutic work is until now underestimated. Objectives For psychiatrists who work according to Fagioli's human birth theory the concept of negation is fundamental. Negation is a notion that refers to unconscious reality. Aims: The task of the psychiatrist is to identify and to interpret the negation in the deformed dream images during the psychotherapeutic process. Methods: In contrast to an intentional lie, which is communicated through verbal speech, negation corresponds to unconscious thoughts, which we can find in dreams. During sleep a transformation occurs, language is altered and expressed through images. Negation deforms the image. This deformation of the image happens in an unconscious process. This negation distorts the reality of the patient and his ability to interact with the other. Corresponding the relationship will be aggressive/destructive. The only way to identify this deformation is dream interpretation. Results: Through this therapeutic process the patient will be able to intuit and realize instead of negate the positive qualities of the other and integrate these into his reality. Only human interaction that is free from negation enable the patient to overcome the ideo-affective splitting, which allows recovery of positive affects and the possibility of developing evolutive relationships. Conclusions: Only a clarification of the term negation allows a psychotherapeutic process with the aim of developing evolutive relationships

Topographical localisation of glucidic residues and their variations in the canine zona pellucida during folliculogenesis.

In the present ultrastructural study, horseradish peroxidase-labelled lectins, in conjunction with antiperoxidase antibody and protein A-gold, were used to characterise and localise the oligosaccharide sequences of zona pellucida glycoproteins at different stages of follicular development in the canine ovary. Deacetylation and sialidase digestion were also performed before lectin cytochemistry. The zona pellucida of oocytes present in unilaminar primary follicles reacts with WGA- and RCA-I-lectins. The zona pellucida of oocytes present in bilaminar and trilaminar secondary follicles displays positivity to WGA, RCA-I, Con-A, UEA-I, and sialidase/SBA. This labelling pattern persists in the zona pellucida of oocytes present in antral tertiary follicles with the exception of WGA and RCA-I reactive sites which are differently distributed throughout the zona pellucida. The topographical distribution of these carbohydrates is not uniform throughout the zona pellucida, indicating the regionalization of oligosaccharide chains within three concentric bands of the zona matrix: an inner surface close to the oocyte plasma membrane, an intermediate portion and an outer layer in contact with the follicular cells. Our results demonstrated variations in the presence and distribution of the carbohydrate residues in the canine zona pellucida during different stages of follicular growth. We also observed the presence of vesicles in both the ooplasm and granulosa cells, showing a similar lectin binding pattern to that of the zona pellucida