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Low Resolution Solution Structure of HAMLET and the Importance of Its Alpha-Domains in Tumoricidal Activity.

HAMLET (Human Alpha-lactalbumin Made LEthal to Tumor cells) is the first member in a new family of protein-lipid complexes with broad tumoricidal activity. Elucidating the molecular structure and the domains crucial for HAMLET formation is fundamental for understanding its tumoricidal function. Here we present the low-resolution solution structure of the complex of oleic acid bound HAMLET, derived

"Helter-Skelter-Like" Perylene Polyisocyanopeptides

We report on a combined experimental and computational investigation on the synthesis and thorough characterization of the structure of perylene-functionalized polyisocyanides. Spectroscopic analyses and extensive molecular dynamics studies revealed a well defined 4, helix in which the perylene molecules form four "helter skelter-like" overlapping pathways along which excitons and electrons can ra

Changes in Philornis infestation behavior threaten Darwin's finch survival

The conservation behavior framework is useful to identify key linkages between behavior and conservation practice. We apply this framework to a novel host-parasite system on the Galapagos Islands and ask if there have been changes in parasite oviposition behavior and host mortality patterns across the first decade (2004-2013) of its known association. The Dipteran parasite Philornis downsi was fir

The COST 2100 Channel Model: Parameterization and Validation Based on Outdoor MIMO Measurements at 300 MHz

The COST 2100 channel model is a geometry based stochastic channel model (GSCM) for multiple-input multiple-output (MIMO) simulations. This paper presents parameterization and validation of the channel model for peer-to-peer communication in the 300 MHz band. Measurements were carried out in outdoor environments for both line-of-sight (LOS) and non line-of-sight (NLOS) scenarios. The COST 2100 cha

A characterization of compactness for singular integrals

We prove a T(1) theorem to completely characterize compact Calderon-Zygmund operators. The result provides sufficient and necessary conditions for the compactness of singular integral operators acting on L-p(R) with 1 < p < infinity. (C) 2015 Elsevier Masson SAS. All rights reserved.

Streptococcal virulence and the coagulation system.

Popular Abstract in Swedish Vi har undersökt hur och varför streptokocker orsakar sjukdom. Vi började med att undersöka hur proteiner på bakterieytan interagerar med det så kallade kontaktsystemet, som är en del av immunförsvaret och blodlevringen. Vi fann att det bildades en inflammatorisk signalmolekyl och ett bakteriedödande proteinfragment men bakteriens ytproteiner skyddade mot det. Att bakteThis thesis explores streptococcal virulence from both mechanistic and evolutionary perspectives, where the mechanistic studies focus on interactions with the human coagulation system. We describe interactions between streptococcal surface proteins and components of the intrinsic pathway of coagulation and the kallikrein-kinin system in human plasma, as well as to how these surface proteins are pr

Studies in beta cells and adipocytes in the context of obesity and T2D - focusing on PDE3B, OPN and SCFAs

Popular Abstract in Swedish Typ 2-diabetiker: söt som socker och rik på fett Det finns flera olika varianter av diabetes och den mest förekommande är typ 2-diabetes (T2D). T2D kallades förr i dagligt tal åldersdiabetes, men numera drabbas individer i alla åldrar. Sjukdomen kännetecknas av förhöjda nivåer av socker och fett i blodet, vilket beror på att kroppens celler har en nedsatt förmåga att tType 2 diabetes (T2D) is a heterogeneous disease characterized by altered lipid parameters and elevated glucose levels, as a direct consequence of impaired insulin signaling in target tissues and reduced insulin exocytosis from pancreatic β-cells. Obesity, which dramatically increases worldwide, is associated with insulin resistance and T2D. In this thesis, we elucidate the effects of hormones and

Patterns and dynamics of dissolved organic carbon (DOC) in boreal streams: The role of processes, connectivity, and scaling

Abstract in UndeterminedWe bring together three decades of research from a boreal catchment to facilitate an improved mechanistic understanding of surface water dissolved organic carbon (DOC) regulation across multiple scales. The Krycklan Catchment Study encompasses 15 monitored nested research catchments, ranging from 3 to 6900 ha in size, as well as a set of monitored transects of forested and

Meat and Heme Iron Intake and Risk of Squamous Cell Carcinoma of the Upper Aero-Digestive Tract in the European Prospective Investigation into Cancer and Nutrition (EPIC)

Background: Evidence from prospective studies on intake of meat and fish and risk of squamous cell carcinoma (SCC) of the upper aero-digestive tract (UADT) is scarce. We prospectively investigated the association of meat and fish intake with risk of SCC of the UADT and the possible mechanism via heme iron in the large multicenter European Prospective Investigation into Cancer and Nutrition (EPIC)

Crosstalk between colorectal cancer cells and tumour-associated macrophages

Popular Abstract in English Colorectal cancer (CRC) is a cancer caused by uncontrolled cell growth in colon or rectum. CRC is the third most common cancer and the fourth leading cause of cancer related death in the world. It is a multifactorial disease, both genetic predisposition and environmental play a role in the development of CRC. CRC is closely linked to chronic inflammation. Patients with Colorectal cancer (CRC) is the third most common cancer and the fourth leading cause of death from cancer worldwide. People suffering from inflammatory bowel disease, such as Crohns’ disease and ulcerative colitis, are at an increased risk of developing CRC. The development of CRC is highly influenced by the tumour microenvironment. Tumour cells are able to recruit macrophages and change their beh

Redefinition and global estimation of basal ecosystem respiration rate

Basal ecosystem respiration rate (BR), the ecosystem respiration rate at a given temperature, is a common and important parameter in empirical models for quantifying ecosystem respiration (ER) globally. Numerous studies have indicated that BR varies in space. However, many empirical ER models still use a global constant BR largely due to the lack of a functional description for BR. In this study,

Hopping Conduction in Mn Ion-Implanted GaAs Nanowires.

We report on temperature-dependent charge transport in heavily doped Mn(+)-implanted GaAs nanowires. The results clearly demonstrate that the transport is governed by temperature-dependent hopping processes, with a crossover between nearest neighbor hopping and Mott variable range hopping at about 180 K. From detailed analysis, we have extracted characteristic hopping energies and corresponding ho

Atomic origin of the scanning tunneling microscopy images of charge-density-waves on 1T-TaSe2

We show atomically resolved scanning tunneling microscopy (STM) images of charge density waves (CDWs) at room temperature together with angle-resolved photoelectron band-mapping of 1T-TaSe2. By comparing the results of these two techniques, we demonstrate the atomic structure of the CDW-features observed by the STM and atomic origin of the reconstructed band-structure in this material. (c) 2007 El