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Stephen Kowalczykowski
Stephen Charles Kowalczykowski ("Steve K") is a Distinguished Professor oMicrobiology and Molecular Geneticsat thUniversity of California at Davis His research focuses on the biochemistry and molecular biology of DNA repair and homologous recombination. His lab combines fluorescence microscopy, optical trapping and microfluidics to manipulate and visualize single molecules of DNA and the enzymes involved in processing and repairing DNA. He calls this scientific approach, "visual biochemistry". Stephen Kowalczykowski was elected to the American Society for Arts and Science in 2005, thNational Academy of Sciencesin 2007 and was a Harvey Society Lecturer at Rockefeller University in 2012. Education and career Stephen Kowalczykowski studied chemistry (B.S.) at Rensselaer Polytechnic Institute in 1972 and earned his Ph.D. in Chemistry/Biochemistry at Georgetown University in 1976. His dissertation title was "Physical-Chemistry studies of Sickle Cell Hemoglobin." He then worked as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five major unincorporated territories, nine United States Minor Outlying Islands, Minor Outlying Islands, and 326 Indian reservations. The United States is also in Compact of Free Association, free association with three Oceania, Pacific Island Sovereign state, sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Palau, Republic of Palau. It is the world's List of countries and dependencies by area, third-largest country by both land and total area. It shares land borders Canada–United States border, with Canada to its north and Mexico–United States border, with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the List of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvey Society Lecturer
Harvey, Harveys or Harvey's may refer to: Arts, entertainment, and media * ''Harvey'' (play), a 1944 play by Mary Chase about a man befriended by an invisible anthropomorphic rabbit * Harvey Awards ("Harveys"), one of the most important awards in American comic industry, founded in 1988 * "Harvey", a song by Her's off the album ''Invitation to Her's'', 2018 Films * ''Harvey'' (1950 film), a 1950 film adapted from Mary Chase's play, starring James Stewart * ''Harvey'' (1996 film), a 1996 American made-for-television film * ''Harvey'' (Hallmark), a 1972 adaptation of Mary Chase's play for the ''Hallmark Hall of Fame'' Characters * Harvey (''Farscape''), a character in the TV show ''Farscape'' * Harvey, a crane engine in ''Thomas & Friends'' * Harvey Beaks, in the Nickelodeon animated series ''Harvey Beaks'' * Harvey Birdman, title character from the teen-adult animated series ''Harvey Birdman, Attorney at Law'' * Harvey Dent, fictional District Attorney and supervillain (a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rensselaer Polytechnic Institute Alumni
Rensselaer may refer to: Places * Rensselaer, Indiana, a city **Rensselaer (Amtrak station), serving the city * Rensselaer, Missouri, a village * Rensselaer County, New York * Rensselaer, New York, a city in Rensselaer County *Rensselaer Falls, New York, a village in St. Lawrence County *Rensselaerville, New York, a town in Albany County * Manor of Rensselaerswyck, the Van Rensselaer family's estate during colonial times People * Van Rensselaer (surname) * Rensselaer Morse Lewis (1820-1888), Wisconsin state legislator * Rensselaer Nelson (1826-1904), U.S. federal judge * Rensselaer Westerlo (1776–1851), U.S. Congressman from New York * Bret Rensselaer, an American-born, British spy in the Bernard Samson Bernard Samson is a fictional character created by Len Deighton. Samson is a middle-aged and somewhat jaded intelligence officer working for the Secret Intelligence Service (SIS) – usually referred to as "the Department" in the novels. He is ... novels Other * Renssela ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georgetown University Alumni
Georgetown University is a private research university located in Washington, D.C. Founded in 1789, Georgetown University is the oldest Catholic and Jesuit institution of higher education in the United States. The school graduates about two thousand undergraduate and postgraduate students annually. There are nine constitutive schools, five of which offer undergraduate degrees and six of which offer graduate degrees, as two schools offer both undergraduate and graduate degrees. Legend Note: Individuals who may belong in multiple sections appear only in one. An empty class year or school/degree box indicates that the information is unknown. ''* Indicates the alumnus or alumna attended but did not graduate (includes years of attendance)'' * Col – Georgetown College :*CAS – former College of Arts & Sciences :*SLL – former School of Languages and Linguistics, now the Faculty of Languages and Linguistics within the College * Dent – School of Dentistry (defunct) * Gra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of California, Davis Faculty
A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. ''University'' is derived from the Latin phrase ''universitas magistrorum et scholarium'', which roughly means "community of teachers and scholars". Universities typically offer both undergraduate and postgraduate programs. The first universities in Europe were established by Catholic Church monks. The University of Bologna (), Italy, which was founded in 1088, is the first university in the sense of: *being a high degree-awarding institute. *using the word ''universitas'' (which was coined at its foundation). *having independence from the ecclesiastic schools and issuing secular as well as non-secular degrees (with teaching conducted by both clergy and non-clergy): grammar, rhetoric, logic, theology, canon law, notarial law.Hunt Janin: "The university in medieval life, 1179–1499", McFarland, 2008, , p. 55f.de Ridder-Symoens, Hilde' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
21st-century American Biologists
The 1st century was the century spanning AD 1 (Roman numerals, I) through AD 100 (Roman numerals, C) according to the Julian calendar. It is often written as the or to distinguish it from the 1st century BC (or BCE) which preceded it. The 1st century is considered part of the Classical era, epoch, or History by period, historical period. The 1st century also saw the Christianity in the 1st century, appearance of Christianity. During this period, Europe, North Africa and the Near East fell under increasing domination by the Roman Empire, which continued expanding, most notably conquering Britain under the emperor Claudius (AD 43). The reforms introduced by Augustus during his long reign stabilized the empire after the turmoil of the previous century's civil wars. Later in the century the Julio-Claudian dynasty, which had been founded by Augustus, came to an end with the suicide of Nero in AD 68. There followed the famous Year of Four Emperors, a brief period of civil war and inst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Molecular Biologists
American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, people who self-identify their ancestry as "American" ** American English, the set of varieties of the English language native to the United States ** Native Americans in the United States, indigenous peoples of the United States * American, something of, from, or related to the Americas, also known as "America" ** Indigenous peoples of the Americas * American (word), for analysis and history of the meanings in various contexts Organizations * American Airlines, U.S.-based airline headquartered in Fort Worth, Texas * American Athletic Conference, an American college athletic conference * American Recordings (record label), a record label previously known as Def American * American University, in Washington, D.C. Sports teams Soccer * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bloom's Syndrome
Bloom syndrome (often abbreviated as BS in literature) is a rare autosomal recessive genetic disorder characterized by short stature, predisposition to the development of cancer, and genomic instability. BS is caused by mutations in the '' BLM'' gene which is a member of the RecQ DNA helicase family. Mutations in other members of this family, namely WRN and RECQL4, are associated with the clinical entities Werner syndrome and Rothmund–Thomson syndrome, respectively. More broadly, Bloom syndrome is a member of a class of clinical entities that are characterized by chromosomal instability, genomic instability, or both and by cancer predisposition. Cells from a person with Bloom syndrome exhibit a striking genomic instability that includes excessive crossovers between homologous chromosomes and sister chromatid exchanges (SCEs). The condition was discovered and first described by New York dermatologist Dr. David Bloom in 1954. Bloom syndrome has also appeared in the older literat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holliday Junction
A Holliday junction is a branched nucleic acid structure that contains four double-stranded arms joined. These arms may adopt one of several conformations depending on buffer salt concentrations and the sequence of nucleobases closest to the junction. The structure is named after Robin Holliday, the molecular biologist who proposed its existence in 1964. In biology, Holliday junctions are a key intermediate in many types of genetic recombination, as well as in double-strand break repair. These junctions usually have a symmetrical sequence and are thus mobile, meaning that the four individual arms may slide through the junction in a specific pattern that largely preserves base pairing. Additionally, four-arm junctions similar to Holliday junctions appear in some functional RNA molecules. Immobile Holliday junctions, with asymmetrical sequences that lock the strands in a specific position, were artificially created by scientists to study their structure as a model for natu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enzyme
Enzymes () are proteins that act as biological catalysts by accelerating chemical reactions. The molecules upon which enzymes may act are called substrate (chemistry), substrates, and the enzyme converts the substrates into different molecules known as product (chemistry), products. Almost all metabolism, metabolic processes in the cell (biology), cell need enzyme catalysis in order to occur at rates fast enough to sustain life. Metabolic pathways depend upon enzymes to catalyze individual steps. The study of enzymes is called ''enzymology'' and the field of pseudoenzyme, pseudoenzyme analysis recognizes that during evolution, some enzymes have lost the ability to carry out biological catalysis, which is often reflected in their amino acid sequences and unusual 'pseudocatalytic' properties. Enzymes are known to catalyze more than 5,000 biochemical reaction types. Other biocatalysts are Ribozyme, catalytic RNA molecules, called ribozymes. Enzymes' Chemical specificity, specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microfluidics
Microfluidics refers to the behavior, precise control, and manipulation of fluids that are geometrically constrained to a small scale (typically sub-millimeter) at which surface forces dominate volumetric forces. It is a multidisciplinary field that involves engineering, physics, chemistry, biochemistry, nanotechnology, and biotechnology. It has practical applications in the design of systems that process low volumes of fluids to achieve multiplexing, automation, and high-throughput screening. Microfluidics emerged in the beginning of the 1980s and is used in the development of inkjet printheads, DNA chips, lab-on-a-chip technology, micro-propulsion, and micro-thermal technologies. Typically, micro means one of the following features: * Small volumes (μL, nL, pL, fL) * Small size * Low energy consumption * Microdomain effects Typically microfluidic systems transport, mix, separate, or otherwise process fluids. Various applications rely on passive fluid control using capillary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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