Diatom is microscopic photosynthetic plankton found almost anywhere where there is water, single-celled autotrophic organism having highly ornate siliceous walls. They can occur in large amounts and forms, and the number of species estimated to be over 100 000. You can find roughly around 6 million of diatoms per cubic foot of seawater. Organically is very important because their photosynthesis accounts for approximately 25-30% of the organic carbon sequestration and thus a significant part of...
EPA has classified inorganic Arsenic (As) as a Group 'A', human carcinogen. Along with water, and soil As also entered into the food chain prominently around the Gangetic belt of Bangladesh and India thus, posing threat on the exposed population. Therefore, the study was undertaken to investigate the entry of As in food materials along the levee of river Ganges in Bihar (India). Water samples were collected from Hand Tube Wells, soil and four representative food samples Wheat, Rice, Pulse and...
Introduction Cockles are small, bivalve molluscs from the family Cardiidae that are found in sheltered beaches around the world. There are over 200 species of cockles found in various places, but the most common species around the UK is the Cerastoderma edule, also known as the Common Cockle. The Common Cockle is found on beaches on the northern European coastline from the Bearing Sea as far south as the north western coast of Africa. The Common Cockle is the most abundant species of...
Structure function studies of Helicobacter pylori urease accessory proteins UreF and UreH - protein engineering studies and structure determination of the ternary UreG/UreF/UreH complex Abstract Colonization of Helicobacter pylori in acidic stomach requires the activity of urease, which hydrolyzes urea into ammonia and carbon dioxide. To become enzymatically active, the apo-urease undergoes a post-translation carbamylation of an active-site lysine residue, followed by insertion of two nickel...
In this study Biosurfactant producing bacteria which were isolated from compost, were selected during preliminary screening through blood agar hemolysis activity, drop collapse test and oil spreading technique. Isolates with at least more than one positive response to these three methods were subjected to complementary screening by measuring surface tension reduction as well as emulsification capacity. Using these screening methods, two biosurfactant producing isolates have been successfully...
Cetacean densities and abundance are generally assessed in surveys that use many different observers and viewing conditions, all of which can affect the resultant estimates obtained. Variation in these parameters and their effects can significantly effect the results of surveys making them difficult to compare and assess. Cardigan Bay SAC, with its well-studied populations of bottlenose dolphin and harbour porpoise, offers the opportunity  to test for variation in detection rates due to...
The human body is made with different kinds of immunity, which protects it from anything that could harm the body. During an allergic reaction, the immune system erroneously believes that what have entered the body are harmful, thus producing antibodies called IgE (immunoglobulin E) antibodies to protect itself from the harmful element. It then circulates through the blood forming IgE's, which are specific to something as light as food. After this food-specific IgE is formed, it attaches itself...
Polychlorinated biphenyls, PCBs, are organic, chlorinated chemicals that are synthetically produced from manufacturing companies. The high chemical properties and low reactivity of the compound allows the toxin to be useful in industrial applications such as coolant fluids and dielectrics. Although the toxin has been banned in the United States since 1976, its presence has been accumulated in the environment in areas such as air, water, sediments, and soils. PCBs are able to accumulate in...
Based on the change in electrochemical behavior of enzymatic activity, six kinds of acetylcholinesterase biosensor have been devised for investigation of electrodes sensitivity using different modified methods. Electrochemical impedance spectroscopy (EIS) and cyclic voltammograms (CV) were used to investigate the electrochemical response of the six different modified glassy carbon electrodes, respectively. The results shown that the gelatinous composite containing functional multiwall carbon...
Ubiquitination, one of the most important post-translational modifications of proteins, occurs when ubiquitin (a small 76 amino-acid protein) is attached to lysine on a target protein. It often commits the labeled protein to degradation and plays important roles in regulating many cellular processes implicated in a variety of diseases. Since ubiquitination is rapid and reversible, it is time-consuming and labor-intensive to identify ubiquitination sites using conventional experimental...