Search results

Direct catalytic conversion of methane to methanol offers a pathway for transforming a potent greenhouse gas into a portable clean liquid fuel, thereby mitigating carbon emissions and supporting sustainable energy. However, this process faces challenges from thermodynamically favorable methanol overoxidation. Here, we show that spatiotemporal regulation of photogenerated charge carriers on enginee

I snart 500 år har människan använt sig av diverse optiska instrument för att betrakta sådant som inte är möjligt att se med blotta ögat. Teleskop har använts för att studera himlakroppar och mikroskop för att exempelvis undersöka små biologiska beståndsdelar. Det finns idag många olika metoder inom optisk mikroskopi men samtliga följer en liknande grundprincip. Objektet som ska avbildas exponerasSeveral significant pathogenic bacteria exhibit surface proteins that bind human antibodies, preventing them from being recognized by the human immune system. These bacteria are thus protected from elimination and can survive in the host organism. One common such bacteria is the Streptococcus pyogenes that exhibits the antibody binding M protein on its surface. Streptococcus pyogenes causes more t

Kan cellers proteiner bota HPV- sjukdomar? Livmoderhalscancer är en av de vanligaste cancersjukdomarna som drabbar kvinnor världen över. Varje år, diagnostiseras ungefär 500 000 kvinnor och 270 000 dör i sjukdomen, varav de flesta dödsfallen sker i utvecklingsländer. Livmoderhalscancer orsakas av det vanligt förekommande viruset humant papillomvirus (HPV) och för att hitta bättre behandling mot sHuman papillomaviruses (HPVs) are small DNA viruses that have evolved over millions of years and are well-adapted to humans. Persistent infections with HPVs, can result in cancer development. There are over 200 different HPV types that can be divided into high- and low risk types based on their ability to cause cancer. HPV16 is the most common high- risk type that accounts for more than 50 % of al

Continuum solvation methods are frequently used to increase the efficiency of computational methods to estimate free energies. In this paper, we have evaluated how well such methods estimate the nonpolar solvation free-energy change when a ligand binds to a protein. Three different continuum methods at various levels of approximation were considered, viz., the polarized continuum model (PCM), a me

Populärvetenskaplig sammanfattning: Mer än två miljarder människor, mestadels i utvecklingsländer, saknar tillgång till moderna energikällor eller elektricitet. Behovet av rena, effektiva, pålitliga och ekonomiskt överkomliga energitjänster är en viktig fråga i utvecklingsländer, särskilt för landsbygden, där merparten av befolkningen bor. Förnyelsebara energikällor i form av småskaliga vattenkrafOver 2 billion people, mostly in developing countries, have no access to modern fuels or electricity. The necessity of clean, efficient, reliable and affordable energy services is a crucial issue in developing countries, especially in the context of rural areas where the majority of the people lives. Renewable energy sources in shape of small-scale hydropower systems are a complement or alternativ

Research on the sourcing of siliceous raw materials in Prehistory has taken a step forward with the addition of geochemical techniques and elemental analysis to the archaeopetrological method. Counter to the macroscopic techniques, which retain an elevated subjective percentage in their results, geochemical techniques and especially LA-ICP-MS analysis generate objective, quantifiable and usable da

Apolipoprotein A-I (apoA-I) is the major protein constituent of high density lipoprotein (HDL) and plays a central role in phospholipid and cholesterol metabolism. This 243-residue long protein is remarkably flexible and assumes numerous lipid-dependent conformations. Consequently, definitive structural determination of lipid-free apoA-I in solution has been difficult. Using electron paramagnetic

Succinate:quinone reductase catalyzes electron transfer from succinate to quinone in aerobic respiration. Carboxin is a specific inhibitor of this enzyme from several different organisms. We have isolated mutant strains of the bacterium Paracoccus denitrificans that are resistant to carboxin due to mutations in the succinate:quinone reductase. The mutations identify two amino acid residues, His228