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Purification, crystallization and X-ray diffraction analysis of dihydropyrimidinase from Dictyostelium discoideum

Dihydropyrimidinase (EC 3.5.2.2) is the second enzyme in the reductive pyrimidine-degradation pathway and catalyses the hydrolysis of 5,6-dihydrouracil and 5,6-dihydrothymine to the corresponding N-carbamylated beta-amino acids. The recombinant enzyme from the slime mould Dictyostelium discoideum was overexpressed, purified and crystallized by the vapour-diffusion method. One crystal diffracted to

Occurrence of the hermit beetle (Osmoderma eremita), in Sweden.

We have compiled data on the occurrence of a threatened beetle, Osmoderma eremita, in Sweden. The species inhabits tree hollows with wood mould. The data were compiled from field surveys conducted in 1993-2003, using pitfall traps at 401 localities and using wood mould sampling at 104 localities. We have also gone through published data and all larger Swedish museums and registered old records. O.

Review of Religion och sociologi. Ett fruktbart möte. Festskrift till Göran Gustafsson. Utg av Curt Dahlgren, Eva M. Hamberg & Thorleif Pettersson. Lund 2002. Nytt vin i nya läglar. Festskrift till Gustav Björkstrand på 60-årsdagen den 25 oktober 2001.

Rec. diskuterar festskriften som genre i allmänhet, och i synnerhet dessa båda exempel på olika uppläggning, som båda tecknar ett akademiskt vänporträtt och för forskningsfronten framåt. Sedan övergår rec. till att lyfta fram de bidrag som är av särskilt kyrkohistoriskt intresse. Festskriften till Göran Gustafsson avslutas med en värdefull bibliografi

Mass transport model for semiconductor nanowire growth

We present a mass transport model based on surface diffusion for metal-particle-assisted nanowire growth. The model explains the common observation that for III/V materials thinner nanowires are longer than thicker ones. We have grown GaP nanowires by metal-organic vapor phase epitaxy and compared our model calculations with the experimental nanowire lengths and radii. Moreover, we demonstrate tha

Dynamic arraying of microbeads for bioassays in microfluidic channels

This paper proposes a new dynamic mode of generating bioanalytical arrays in microfluidic systems, based on ultrasonic trapping of microbeads using acoustic forces in standing waves. Trapping of microbead clusters in an array format within a flow-through device is demonstrated for the first time using a device with three integrated ultrasonic microtransducers. The lateral extension of each trappin

A carbohydrate binding module as a diversity-carrying scaffold

The growing field of biotechnology is in constant need of binding proteins with novel properties. Not just binding specificities and affinities but also structural stability and productivity are important characteristics for the purpose of large-scale applications. In order to find such molecules, libraries are created by diversifying naturally occurring binding proteins, which in those cases serv

The Impact of Estradiol on Bone Mineral Density is modulated by The Specific Estrogen Receptor-{alpha} Cofactor RIZ1 Insertion/Deletion Polymorphism.

Context: Estrogens regulate bone mass by binding to the estrogen receptor (ER)-alpha as well as ER-beta. The specific ER -cofactor retinoblastoma-interacting zinc finger protein (RIZ)-1 enhances ER alpha function in the presence of estrogen. Objective: The objective of the study was to determine whether a RIZ P704 insertion (+)/ deletion (-) (indel) polymorphism modulates the impact of estradiol o

Vascular PG-M/versican variants promote platelet adhesion at low shear rates and cooperate with collagens to induce aggregation

We have identified a novel von Willebrand factor/fibrinogen/selectin-independent, platelet adhesion-promoting function of vascular PG-M/versicans that may be relevant in normal venous thrombosis and critical in atherosclerotic conditions. A purification scheme was devised to obtain vascular versicans, which by biochemical, immunochemical, and ultrastructural means were asserted to be 1) composed p

Analysis of regulatory phosphorylation sites in ZAP-70 by capillary high-performance liquid chromatography coupled to electrospray ionization or matrix-assisted laser desorption ionization time-of-flight mass spectrometry

A methodology for the rapid and quantitative analysis of phosphorylation sites in proteins is presented. The coupling of capillary high-performance liquid chromatography (HPLC) to electrospray ionization mass spectrometry (ESI-MS) allowed one to distinguish phosphorylation sites based on retention time and mass difference from complex peptide mixtures. The methodology was first evaluated and valid

Budesonide and formoterol in a single inhaler improves asthma control compared with increasing the dose of corticosteroid in adults with mild-to-moderate asthma

Background: We evaluated the efficacy and safety of low-dose budesonide/formoterol, 80 mug/4.5 mug, bid in a single inhaler (Symbicort Turbuhaler; AstraZeneca; Lund, Sweden) compared with an increased dose of budesonide, 200 mug bid, in adult patients with mild-to-moderate asthma not fully controlled on low doses of inhaled corticosteroid alone. Methods: All patients received budesonide, 100 jig b

Piaget and Vygotsky on the child becoming sign-minded

As the child grows up it becomes more and more a part of the adult world of communication and understanding. Semiotic studies of the development of signs in children are remarkably few, as if the mere existence of signs were taken for granted. The studies in the child’s cognitive development conducted by Piaget and Vygotsky in the last century still have the capacity to influence theoretical claim