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H.M. Krishna Murthy
H.M. Krishna Murthy is a former researcher from the University of Alabama at Birmingham.Hansen, Jeff. "Ex-UAB researcher's work may be fake". The Birmingham News. Retrieved 14 January 2013. In 2009, several of his publications were retracted from scientific journals after accusations of scientific misconduct surfaced. UAB began investigating claims of fraud in January 2007 after the validity of the proteins came into question. The University's probe produced ten publications that were shown not to be valid. These publications have since been retracted from their respective journals."UAB Statement on Protein Data Bank Issues". UAB. Retrieved 14 January 2013. Murthy's publications dealt with the crystal structures of several proteins that he had claimed to have determined using crystallographic methods. It was found that these protein structures were never properly determined and the primary crystallographic data for at least some of them have been fabricated by Murthy. Professional ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Alabama At Birmingham
The University of Alabama at Birmingham (UAB) is a Public university#United States, public List of research universities in the United States, research university in Birmingham, Alabama. Developed from an academic extension center established in 1936, the institution became a four-year campus in 1966 and a fully autonomous university in University of Alabama System, the University of Alabama System in 1969. UAB offers 140 programs of study in 12 academic divisions leading to bachelor's degree, bachelor's, master's degree, master's, doctorate, doctoral, and professional degree, professional degrees in the social sciences, social and behavioral sciences, the liberal arts, business, education, engineering, and health-related fields such as medicine, dentistry, optometry, nursing, and public health. In the fall of 2019, 22,080 students from more than 110 countries were enrolled. The UAB Health System, one of the largest academic medical centers in the United States, is affiliated w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientific Misconduct
Scientific misconduct is the violation of the standard codes of scholarly conduct and ethical behavior in the publication of professional scientific research. A '' Lancet'' review on ''Handling of Scientific Misconduct in Scandinavian countries'' provides the following sample definitions, reproduced in The COPE report 1999: * Danish definition: "Intention or gross negligence leading to fabrication of the scientific message or a false credit or emphasis given to a scientist" * Swedish definition: "Intention ldistortion of the research process by fabrication of data, text, hypothesis, or methods from another researcher's manuscript form or publication; or distortion of the research process in other ways." The consequences of scientific misconduct can be damaging for perpetrators and journal audience and for any individual who exposes it. In addition there are public health implications attached to the promotion of medical or other interventions based on false or fabricated resea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protein Structure
Protein structure is the three-dimensional arrangement of atoms in an amino acid-chain molecule. Proteins are polymers specifically polypeptides formed from sequences of amino acids, the monomers of the polymer. A single amino acid monomer may also be called a ''residue'' indicating a repeating unit of a polymer. Proteins form by amino acids undergoing condensation reactions, in which the amino acids lose one water molecule per reaction in order to attach to one another with a peptide bond. By convention, a chain under 30 amino acids is often identified as a peptide, rather than a protein. To be able to perform their biological function, proteins fold into one or more specific spatial conformations driven by a number of non-covalent interactions such as hydrogen bonding, ionic interactions, Van der Waals forces, and hydrophobic packing. To understand the functions of proteins at a molecular level, it is often necessary to determine their three-dimensional structure. This is t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protein Crystallography
X-ray crystallography is the experimental science determining the atomic and molecular structure of a crystal, in which the crystalline structure causes a beam of incident X-rays to diffract into many specific directions. By measuring the angles and intensities of these diffracted beams, a crystallographer can produce a three-dimensional picture of the density of electrons within the crystal. From this electron density, the mean positions of the atoms in the crystal can be determined, as well as their chemical bonds, their crystallographic disorder, and various other information. Since many materials can form crystals—such as salts, metals, minerals, semiconductors, as well as various inorganic, organic, and biological molecules—X-ray crystallography has been fundamental in the development of many scientific fields. In its first decades of use, this method determined the size of atoms, the lengths and types of chemical bonds, and the atomic-scale differences among various mat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yale University
Yale University is a private research university in New Haven, Connecticut. Established in 1701 as the Collegiate School, it is the third-oldest institution of higher education in the United States and among the most prestigious in the world. It is a member of the Ivy League. Chartered by the Connecticut Colony, the Collegiate School was established in 1701 by clergy to educate Congregational ministers before moving to New Haven in 1716. Originally restricted to theology and sacred languages, the curriculum began to incorporate humanities and sciences by the time of the American Revolution. In the 19th century, the college expanded into graduate and professional instruction, awarding the first PhD in the United States in 1861 and organizing as a university in 1887. Yale's faculty and student populations grew after 1890 with rapid expansion of the physical campus and scientific research. Yale is organized into fourteen constituent schools: the original undergraduate col ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Steitz
Thomas Arthur Steitz (August 23, 1940 – October 9, 2018) was an American biochemist, a Sterling Professor of Molecular Biophysics and Biochemistry at Yale University, and investigator at the Howard Hughes Medical Institute, best known for his pioneering work on the ribosome. Steitz was awarded the 2009 Nobel Prize in Chemistry along with Venkatraman Ramakrishnan and Ada Yonath "for studies of the structure and function of the ribosome".2009 Nobel Prize in Chemistry Nobel Foundation. Steitz also won the Gairdner International Award in 2007Thomas Steitz Thomas Steitz Lab. "for his studies on the structure and function of the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piet Gros
Piet Gros (born July 31, 1962 in Dokkum) is a Dutch chemist and professor biomacromolecular crystallography at Utrecht University. In 2010 he received the NWO Spinoza Prize for the elucidation of the three-dimensional structure of the C3 protein, which plays a central role in the complement system and contributes to innate immunity. Biography Gros was born in Dokkum, Netherlands. He studied chemistry at the University of Groningen, where he graduated cum laude with a master's degree. Five years later Gros received his PhD degree cum laude at the same university, with a thesis on protein crystallography. Subsequently he became a postdoctoral researcher at the ETH Zurich and later at Yale University. In 1994 Gros was given a position at Utrecht University to conduct experimental research towards new applications for protein crystallography. In 2002 he was given the position of full professor. From 2007 until 2010 Gros was head of the department of chemistry and from 2012 to 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protein Data Bank
The Protein Data Bank (PDB) is a database for the three-dimensional structural data of large biological molecules, such as proteins and nucleic acids. The data, typically obtained by X-ray crystallography, NMR spectroscopy, or, increasingly, cryo-electron microscopy, and submitted by biologists and biochemists from around the world, are freely accessible on the Internet via the websites of its member organisations (PDBe, PDBj, RCSB, and BMRB). The PDB is overseen by an organization called the Worldwide Protein Data Bank, wwPDB. The PDB is a key in areas of structural biology, such as structural genomics. Most major scientific journals and some funding agencies now require scientists to submit their structure data to the PDB. Many other databases use protein structures deposited in the PDB. For example, SCOP and CATH classify protein structures, while PDBsum provides a graphic overview of PDB entries using information from other sources, such as Gene ontology. History Two force ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dengue
Dengue fever is a mosquito-borne tropical disease caused by the dengue virus. Symptoms typically begin three to fourteen days after infection. These may include a high fever, headache, vomiting, muscle and joint pains, and a characteristic skin itching and skin rash. Recovery generally takes two to seven days. In a small proportion of cases, the disease develops into a more severe dengue hemorrhagic fever, resulting in bleeding, low levels of blood platelets and blood plasma leakage, or into dengue shock syndrome, where dangerously low blood pressure occurs. Dengue is spread by several species of female mosquitoes of the ''Aedes'' genus, principally ''Aedes aegypti''. The virus has five serotypes; infection with one type usually gives lifelong immunity to that type, but only short-term immunity to the others. Subsequent infection with a different type increases the risk of severe complications. A number of tests are available to confirm the diagnosis including detecting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taq DNA Polymerase
''Taq'' polymerase is a thermostable DNA polymerase I named after the thermophilic eubacterial microorganism ''Thermus aquaticus,'' from which it was originally isolated by Chien et al. in 1976. Its name is often abbreviated to ''Taq'' or ''Taq'' pol. It is frequently used in the polymerase chain reaction (PCR), a method for greatly amplifying the quantity of short segments of DNA. ''T. aquaticus'' is a bacterium that lives in hot springs and hydrothermal vents, and ''Taq'' polymerase was identified as an enzyme able to withstand the protein-denaturing conditions (high temperature) required during PCR. Therefore, it replaced the DNA polymerase from '' E. coli'' originally used in PCR. Enzymatic properties ''Taqs optimum temperature for activity is 75–80 °C, with a half-life of greater than 2 hours at 92.5 °C, 40 minutes at 95 °C and 9 minutes at 97.5 °C, and can replicate a 1000 base pair strand of DNA in less than 10 seconds at 72 °C. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journal Of Biological Chemistry
The ''Journal of Biological Chemistry'' (''JBC'') is a weekly peer-reviewed scientific journal that was established in 1905., jbc.org Since 1925, it is published by the American Society for Biochemistry and Molecular Biology. It covers research in areas of biochemistry and molecular biology. The editor is Alex Toker. As of January 2021, the journal is fully open access. In press articles are available free on its website immediately after acceptance. Editors The following individuals have served as editors of the journal: * 1906–1909: John Jacob Abel and Christian Archibald Herter * 1909–1910: Christian Archibald Herter * 1910–1914: Alfred Newton Richards * 1914–1925: Donald D. Van Slyke * 1925–1936: Stanley R. Benedict. After Benedict died, John T. Edsall served as temporary editor until the next editor was appointed. * 1937–1958: Rudolph J. Anderson * 1958–1967: John T. Edsall * 1968–1971: William Howard Stein * 1971–2011: Herbert Tabor * 2011–2015: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Scientific Misconduct Incidents
Scientific misconduct is the violation of the standard codes of scholarly conduct and ethical behavior in the publication of professional scientific research. A '' Lancet'' review on ''Handling of Scientific Misconduct in Scandinavian countries'' gave examples of policy definitions. In Denmark, scientific misconduct is defined as "intention lnegligence leading to fabrication of the scientific message or a false credit or emphasis given to a scientist", and in Sweden as "intention ldistortion of the research process by fabrication of data, text, hypothesis, or methods from another researcher's manuscript form or publication; or distortion of the research process in other ways." A 2009 systematic review and meta-analysis of survey data found that about 2% of scientists admitted to falsifying, fabricating, or modifying data at least once. Preference for inclusion on this list is for individuals or entities with their own Wikipedia article, and for incidents referenced to multiple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
