In the genetic code, a stop codon is a nucleotide triplet within messenger RNA that signals a termination of translation into proteins. Proteins are based on polypeptides, which are unique sequences of amino acids. Most codons in messenger RNA correspond to the addition of an amino acid to a growing polypeptide chain, which may ultimately become a protein. Stop codons signal the termination of this process by binding release factors, which cause the ribosomal subunits to disassociate, releasing the amino acid chain. While start codons need nearby sequences or initiation factors to start translation, a stop codon alone is sufficient to initiate termination.
The Lockheed SR-71 "Blackbird" is a long-range, Mach 3+ strategic reconnaissance aircraft that was operated by the United States Air Force. It was developed as a black project from the Lockheed A-12 reconnaissance aircraft in the 1960s by Lockheed and its Skunk Works division. American aerospace engineer Clarence "Kelly" Johnson was responsible for many of the design's innovative concepts. During aerial reconnaissance missions, the SR-71 operated at high speeds and altitudes to allow it to outrace threats. If a surface-to-air missile launch were detected, the standard evasive action was simply to accelerate and outfly the missile. The shape of the SR-71 was based on the A-12 which was one of the first aircraft to be designed with a reduced radar cross-section.
A hovercraft, also known as an air-cushion vehicle or ACV, is an amphibious craft capable of travelling over land, water, mud, ice, and other surfaces.
Bacilli is a taxonomic class of bacteria that includes two orders, Bacillales and Lactobacillales, which contain several well-known pathogens such as Bacillus anthracis. Bacilli are almost exclusively gram-positive bacteria.
The Royal Naval Air Service (RNAS) was the air arm of the Royal Navy, under the direction of the Admiralty's Air Department, and existed formally from 1 July 1914 to 1 April 1918, when it was merged with the British Army's Royal Flying Corps to form the Royal Air Force, the world's first independent air force.
Learjet is a Canadian owned, American aerospace manufacturer of business jets for civilian and military use based in Wichita, Kansas. Founded in the late 1950s by William Powell Lear as Swiss American Aviation Corporation, it has been a subsidiary of Canadian Bombardier Aerospace since 1990, which markets it as the "Bombardier Learjet Family".
The 3,000th Learjet was delivered in June 2017.
P1, P01 or P-1 may refer to:
The last universal common ancestor (LUCA), also called the last universal ancestor (LUA), cenancestor, or (incorrectly) progenote, is the most recent population of organisms from which all organisms now living on Earth have a common descent. LUCA is the most recent common ancestor of all current life on Earth. LUCA is not thought to be the first living organism on Earth, but only one of many early organisms, whereas the others became extinct.
The Rolls-Royce Armoured Car was a British armoured car developed in 1914 and used during the First World War, Irish Civil War, the inter-war period in Imperial Air Control in Transjordan, Israel and Mesopotamia, and in the early stages of the Second World War in the Middle East and North Africa.
U1, U.I or U-1 may refer to:
British Hovercraft Corporation was the corporate entity created when the Saunders Roe division of Westland Aircraft and Vickers Supermarine combined March 1966 with the intention of creating viable commercial hovercraft. The shareholdings were Westland Aircraft 65%, Vickers 25%, National Research Development Corporation (NRDC) 10%.
General transcription factors (GTFs), also known as basal transcriptional factors, are a class of protein transcription factors that bind to specific sites (promoter) on DNA to activate transcription of genetic information from DNA to messenger RNA. GTFs, RNA polymerase, and the mediator constitute the basic transcriptional apparatus that first bind to the promoter, then start transcription. GTFs are also intimately involved in the process of gene regulation, and most are required for life.
One-Design is a racing method which may be adopted in sports which use complex equipment, whereby all vehicles, gliders or boats have identical or very similar designs or models. In motor racing, it is also known as Spec series, and one-make racing.
Advanced Engine Research, Ltd. is an auto racing engine manufacturer based in Basildon, Essex, England. Established in 1997, AER has developed winning engines for a number of high-profile international race series in sports car, prototype racing, rallying, touring car, and open wheel racing. They have designed engines derived from road car platforms, but their emphasis is on clean sheet designed engines with a focus on electronics and turbochargers. Their engines have raced in the 24 Hours of Le Mans, the World Endurance Championship (WEC), the European Le Mans Series (ELMS), the United SportsCar Championship (TUSC), GP3, British Touring Car Championship (BTCC), Nissan/Renault World Series, Grand-Am, Paris Dakar and FIA Sportscar Championship. They have worked with a number of manufacturers including Mazda, Ford, Hyundai, MG/Rover, Nissan, and Toyota. In 2012, AER developed and built Formula One turbo test engines to current rules and in July 2012, AER was chosen as engine partner and supplier to the new GP3 racing series.
The Curtiss Model H was a family of classes of early long-range flying boats, the first two of which were developed directly on commission in the United States in response to the ₤10,000 prize challenge issued in 1913 by the London newspaper, the Daily Mail, for the first non-stop aerial crossing of the Atlantic. As the first aircraft having transatlantic range and cargo-carrying capacity, it became the grandfather development leading to early international commercial air travel, and by extension, to the modern world of commercial aviation. The last widely produced class, the Model H-12, was retrospectively designated Model 6 by Curtiss' company in the 1930s, and various classes have variants with suffixed letters indicating differences.
16S ribosomal RNA is the component of the 30S small subunit of a prokaryotic ribosome that binds to the Shine-Dalgarno sequence. The genes coding for it are referred to as 16S rRNA gene and are used in reconstructing phylogenies, due to the slow rates of evolution of this region of the gene. Carl Woese and George E. Fox were two of the people who pioneered the use of 16S rRNA in phylogenetics in 1990.
The asd RNA motif is a conserved RNA structure found is certain lactic acid bacteria. The asd motif was detected by bioinformatics and an individual asd RNA in Streptococcus pyogenes was detected by microarray and northern hybridization experiments as a 170-nucleotide molecule called "SR914400". The transcription start site determined for SR914400 corresponds to the 5′-end of the molecule shown in the consensus diagram.
Non-coding RNAs have been discovered using both experimental and bioinformatic approaches. Bioinformatic approaches can be divided into three main categories. The first involves homology search, although these techniques are by definition unable to find new classes of ncRNAs. The second category includes algorithms designed to discover specific types of ncRNAs that have similar properties. Finally, some discovery methods are based on very general properties of RNA, and are thus able to discover entirely new kinds of ncRNAs.
