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André Michel Lwoff
André Michel Lwoff (8 May 1902 – 30 September 1994) was a French microbiologist and Nobel laureate of Russian-Polish origin. Education, early life and career Lwoff was born in Ainay-le-Château, Allier, in Auvergne, France, the son of Marie (Siminovitch), an artist, and Solomon Lwoff, a psychiatrist. He joined the Institute Pasteur in Paris when he was 19 years old. In 1932, he finished his PhD and, with the help of a grant from the Rockefeller Foundation, moved with his wife and co-researcher Marguerite Lwoff to the Kaiser Wilhelm Institute for Medical Research of Heidelberg to Otto Meyerhof, where he did research on the development of flagellates. Another Rockefeller grant allowed him go to the University of Cambridge in 1937. In 1938, he was appointed departmental head at the Institut Pasteur, where he did groundbreaking research on bacteriophages, microbiota and on the poliovirus. Awards and honors He was awarded numerous prizes from the French Académie des Sciences, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ainay-le-Château
Ainay-le-Château () is a commune in the Allier department in the Auvergne-Rhône-Alpes region of central France. The inhabitants of the commune are known as ''Castelainaisiens'' or ''Castelainaisiennes''. Geography Ainay-le-Château is located some south-east of Bourges and south-west of Nevers. The northern border of the commune is the departmental boundary with Cher and the regional boundary with the Centre-Val de Loire region. Access to the commune is by D951 road from Thaumiers in the north which passes through the town and continues south to Cérilly. The D951 from Charenton-du-Cher in the north-west to Bessais-le-Fromental in the north-east passes through the north of the commune. The D28 comes from Braize in the south-west to the town then continues north to join the D951. The D64 goes east from the town to Valigny. There are several country roads in the commune linking the villages and hamlets inside. These include Le Castinerie, Salvert, La Bete, Saint-Benin, Charno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heidelberg
Heidelberg (; Palatine German language, Palatine German: ''Heidlberg'') is a city in the States of Germany, German state of Baden-Württemberg, situated on the river Neckar in south-west Germany. As of the 2016 census, its population was 159,914, of which roughly a quarter consisted of students. Located about south of Frankfurt, Heidelberg is the List of cities in Baden-Württemberg by population, fifth-largest city in Baden-Württemberg. Heidelberg is part of the densely populated Rhine-Neckar, Rhine-Neckar Metropolitan Region. Heidelberg University, founded in 1386, is Germany's oldest and one of Europe's most reputable universities. Heidelberg is a Science, scientific hub in Germany and home to several internationally renowned #Research, research facilities adjacent to its university, including the European Molecular Biology Laboratory and four Max Planck Society, Max Planck Institutes. The city has also been a hub for the arts, especially literature, throughout the centurie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bacterium
Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, radioactive waste, and the deep biosphere of Earth's crust. Bacteria are vital in many stages of the nutrient cycle by recycling nutrients such as the fixation of nitrogen from the atmosphere. The nutrient cycle includes the decomposition of dead bodies; bacteria are responsible for the putrefaction stage in this process. In the biological communities surrounding hydrothermal vents and cold seeps, extremophile bacteria provide the nutrients needed to sustain life by converting dissolved compounds, such as hydrogen sulphide and methane, to energy. Bacteria also live in symbiotic and parasitic relationshi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Provirus
A provirus is a virus genome that is integrated into the DNA of a host cell. In the case of bacterial viruses (bacteriophages), proviruses are often referred to as prophages. However, proviruses are distinctly different from prophages and these terms should not be used interchangeably. Unlike prophages, proviruses do not excise themselves from the host genome when the host cell is stressed. This state can be a stage of virus replication, or a state that persists over longer periods of time as either inactive viral infections or an endogenous viral element. In inactive viral infections the virus will not replicate itself except through replication of its host cell. This state can last over many host cell generations. Endogenous retroviruses are always in the state of a provirus. When a (nonendogenous) retrovirus invades a cell, the RNA of the retrovirus is reverse-transcribed into DNA by reverse transcriptase, then inserted into the host genome by an integrase. A provirus does not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biochemical Society
The Biochemical Society is a learned society in the United Kingdom in the field of biochemistry, including all the cellular and molecular biosciences. Structure It currently has around 7000 members, two-thirds in the UK. It is affiliated with the European body, Federation of European Biochemical Societies (FEBS). The Society's current President (2016) is Sir David Baulcombe. The Society's headquarters are in London. History The society was founded in 1911 by Benjamin Moore, W.D. Halliburton and others, under the name of the Biochemical Club. It acquired the existing ''Biochemical Journal'' in 1912. The society name changed to the Biochemical Society in 1913. In 2005, the headquarters of the society moved from Portland Place to purpose-built offices in Holborn. In 2009, the headquarters moved again to Charles Darwin House, near Gray's Inn Road. Past presidents include Professor Ron Laskey, Sir Philip Cohen, and Sir Tom Blundell. Awards The society makes a number of merit a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Keilin
David Keilin FRS (21 March 1887 – 27 February 1963) was a Jewish scientist focusing mainly on entomology. Background and education He was born in Moscow in 1887 and his family returned to Warsaw early in his youth. He did not attend school until age ten due to ill health and asthma. Only seven years later, in 1904, he enrolled in the University of Liège. He later studied at Magdalene College, Cambridge, and became a British citizen. Career Keilin became research assistant to George Nuttall, first Quick Professor of Biology at the University of Cambridge, in 1915, and spent the rest of his career there, succeeding Nuttall as Quick Professor and director of the Molteno Institute in 1931. He retired in 1952. He made extensive contributions to entomology and parasitology during his career. He published thirty-nine papers between 1914 and 1923 on the reproduction of lice, the life-cycle of the horse bot-fly, the respiratory adaptations in fly larvae, and other subjects. He ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Netherlands Academy Of Arts And Sciences
The Royal Netherlands Academy of Arts and Sciences ( nl, Koninklijke Nederlandse Akademie van Wetenschappen, abbreviated: KNAW) is an organization dedicated to the advancement of science and literature in the Netherlands. The academy is housed in the Trippenhuis in Amsterdam. In addition to various advisory and administrative functions it operates a number of research institutes and awards many prizes, including the Lorentz Medal in theoretical physics, the Dr Hendrik Muller Prize for Behavioural and Social Science and the Heineken Prizes. Main functions The academy advises the Dutch government on scientific matters. While its advice often pertains to genuine scientific concerns, it also counsels the government on such topics as policy on careers for researchers or the Netherlands' contribution to major international projects. The academy offers solicited and unsolicited advice to parliament, ministries, universities and research institutes, funding agencies and internationa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grand Prix Charles-Leopold Mayer
The Grand Prix Charles-Léopold Mayer (Charles-Léopold Mayer Prize) is awarded annually by the Académie des Sciences (French Academy of Sciences) de l'Institut de France (the French Institute) to researchers who have performed outstanding work in the biological sciences; especially in the areas of cell or molecular biology. Citizens or residents of any nation are eligible for the prize, but it is never awarded to individuals of the same nation two years in a row, nor is the prize ever presented to scholars who are more than 65 years of age. Between the first presentation of the award in 1961 and the year 2009, there have been more than 60 laureates, eleven of whom subsequently received the Nobel Prize in medicine, physiology, or chemistry. The prize is named after French biochemist Charles Léopold Mayer. List of Recipients of the Grand Prix Charles-Léopold Mayer Source Académie des sciences *2019 - Silvia Arber *2018 - Eric Gilson *2016 - Claude Desplan *2015 - François Sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Académie Des Sciences
The French Academy of Sciences (French: ''Académie des sciences'') is a learned society, founded in 1666 by Louis XIV at the suggestion of Jean-Baptiste Colbert, to encourage and protect the spirit of French scientific research. It was at the forefront of scientific developments in Europe in the 17th and 18th centuries, and is one of the earliest Academies of Sciences. Currently headed by Patrick Flandrin (President of the Academy), it is one of the five Academies of the Institut de France. History The Academy of Sciences traces its origin to Colbert's plan to create a general academy. He chose a small group of scholars who met on 22 December 1666 in the King's library, near the present-day Bibliothèque Nationals, and thereafter held twice-weekly working meetings there in the two rooms assigned to the group. The first 30 years of the Academy's existence were relatively informal, since no statutes had as yet been laid down for the institution. In contrast to its British ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poliovirus
A poliovirus, the causative agent of polio (also known as poliomyelitis), is a serotype of the species ''Enterovirus C'', in the family of ''Picornaviridae''. There are three poliovirus serotypes: types 1, 2, and 3. Poliovirus is composed of an RNA genome and a protein capsid. The genome is a single-stranded positive-sense RNA (+ssRNA) genome that is about 7500 nucleotides long. The viral particle is about 30 nm in diameter with icosahedral symmetry. Because of its short genome and its simple composition—only RNA and a nonenveloped icosahedral protein coat that encapsulates it—poliovirus is widely regarded as the simplest significant virus. Poliovirus was first isolated in 1909 by Karl Landsteiner and Erwin Popper. The structure of the virus was first elucidated in 1958 using X-ray diffraction by a team at Birkbeck College led by Rosalind Franklin, showing the polio virus to have icosahedral symmetry. In 1981, the poliovirus genome was published by two different teams ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microbiota
Microbiota are the range of microorganisms that may be commensal, symbiotic, or pathogenic found in and on all multicellular organisms, including plants. Microbiota include bacteria, archaea, protists, fungi, and viruses, and have been found to be crucial for immunologic, hormonal, and metabolic homeostasis of their host. The term ''microbiome'' describes either the collective genomes of the microbes that reside in an ecological niche or within the microbes themselves. The microbiome and host emerged during evolution as a synergistic unit from epigenetics and genetic characteristics, sometimes collectively referred to as a holobiont. The presence of microbiota in human and other metazoan guts has been critical for understanding the co-evolution between metazoans and bacteria. Microbiota play key roles in the intestinal immune and metabolic responses via their fermentation product (short-chain fatty acid), acetate. Introduction All plants and animals, from simple life fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bacteriophage
A bacteriophage (), also known informally as a ''phage'' (), is a duplodnaviria virus that infects and replicates within bacteria and archaea. The term was derived from "bacteria" and the Greek φαγεῖν ('), meaning "to devour". Bacteriophages are composed of proteins that encapsulate a DNA or RNA genome, and may have structures that are either simple or elaborate. Their genomes may encode as few as four genes (e.g. MS2) and as many as hundreds of genes. Phages replicate within the bacterium following the injection of their genome into its cytoplasm. Bacteriophages are among the most common and diverse entities in the biosphere. Bacteriophages are ubiquitous viruses, found wherever bacteria exist. It is estimated there are more than 1031 bacteriophages on the planet, more than every other organism on Earth, including bacteria, combined. Viruses are the most abundant biological entity in the water column of the world's oceans, and the second largest component of biom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
