Enzymes /ËÉnzaɪmz/ are large biological molecules responsible for the thousands of chemical interconversions that sustain life.[1][2] They are highly selective catalysts, greatly accelerating both the rate and specificity of metabolic reactions, from the digestion of food to the synthesis of DNA. Most enzymes are proteins, although some catalytic RNA molecules have been identified. Enzymes adopt a specific three-dimensional structure, and may employ organic (e.g. biotin) and inorganic (e.g. magnesium ion) cofactors to assist in catalysis.
In a promising discovery for students and party aninals all over the world, a team of researchers led by UCLA engineers has identified a method for speeding up the body’s reaction to alcohol consumption – practically elimining the hangover. Researchers take their hangovers really seriously – in a paper published online Feb. 17 in the [...]
A team of international researchers from US and China have employed a novel method to link enzymes together and then encapsulate them in a polymer shell. This enables the enzymes to work sequentially in chemical reactions, just like in nature. To illustrate their enzyme batch, a group of mice were intoxicated with alcohol and then injected [...]
Culturing mammalian cells is currently the only way to make some complex proteins used in certain drugs; but growing such cultures is an extremely difficult and delicate job, because they can harbor human pathogens and must therefore be kept under strict temperature conditions. It’s a difficult job, but it’s definitely worth it; take a look [...]
University of Nottingham scientists spurred a slew of debate in 2008 when they claimed their object of study, the planaria or “flatworm”, might actually be immortal, possessing an indefinite ability to regenerate its cells and thus practically never grow old. In fact, an important distinction must be made, it’s not that the flatworm never grows old that’s [...]
Scientists have genetically engineered mice able to express a certain enzyme, which allows for an increased metabolic rate. The lab mice infussed with this enzyme in their fat tissue were able to eat more, but gain far less weight than their naturally bred brethren. It’s generally acknowledged that obesity and inflammation cause insulin resistance, however [...]
Scientists from Washington University have been struggling for the past decade to decipher the complex structure of a enzyme that exhibits AIDS-like behavior, and which might hold a critical role in building a cure for the disease. Gamers playing spatial game Foldit have managed to collectively determine the enzyme’s structure in ten days. Puzzle by the [...]
If we’re to guide ourselves after Aubrey de Grey‘s telling, according to his predictions the first person who will live to see their 150th birthday has already been born, and as science advances along the decades at the current pace it does, he claims people born soon after the latter mentioned birthday will live to [...]
The fight against Alzheimer’s is a harsh and rugged one, and despite numerous advancements, there still isn’t a definitive cure for the disease around – or a fail proof way to detect it in the early stages.. Still, if you can’t defeat it, it’s still better to slow it down a little, and that’s exactly [...]
Polymethyl methacrylate (PMMA for short) is a thermoplastic and transparent plastic that’s called acrylic glass for short. In the not so distant future it could be made from natural products such as sugars, alcohols or fatty acids. This process is much more environmentally friendly than the process used now. PMMA is manufactured by polymerising methyl [...]
In what is a great leap for science, scientists from UCLA and the University of Washington have succeeded in creating “designer enzymes,” a major milestone in computational chemistry and protein engineering. The two groups were led by UCLA’s chemistry professor Kendall Houk and Washington’s biochemist David Baker. Designer enzymes will have applications for defense against [...]
Thu, Feb 21, 2013
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