Antony Williams | |
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Born | Antony John Williams St Asaph, Denbighshire, Wales |
Nationality | British |
Alma mater | |
Known for | |
Awards | Jim Gray e-Science award (2012) |
Scientific career | |
Fields | |
Institutions | |
Thesis | High pressure NMR and relaxation studies of alkyl chain systems (1988) |
Doctoral advisor | Duncan G. Gillies[ citation needed ] |
Website | www |
Antony John Williams is a British chemist and expert in the fields of both nuclear magnetic resonance (NMR) spectroscopy and cheminformatics at the United States Environmental Protection Agency. [2] [3] He is the founder of the ChemSpider website that was purchased by the Royal Society of Chemistry in May 2009. He is a science blogger [4] and an author. [5] [6] [7] [8] [9] [10] [11]
Antony Williams was born in St Asaph, Wales, June 1964 to Ernest Edward Williams, owner of a building contracting firm, and Eirlys Elizabeth Williams. He has one older sister, Rae. He grew up in a small village near Caerwys.
Williams attended Primary School in both Holywell and Nannerch until 1975. From the age of eleven, he attended Alun School where he received A-levels in mathematics, geography, and chemistry.
Williams earned his Bachelor of Science in chemistry from the University of Liverpool, in 1985, writing an undergraduate dissertation on "Spectroscopic Studies of Vitamin E Related Systems" where he applied both electron paramagnetic resonance (EPR) and Nuclear magnetic resonance spectroscopy (NMR) to the study of molecules similar in structure to Vitamin E.
Williams earned his Ph.D. in chemistry, funded by Royal Dutch Shell, from Royal Holloway, University of London in 1988 and wrote a thesis entitled "High pressure NMR and relaxation studies of alkyl chain systems". [12] He won the Bourne Medal from the University of London for this work and developed a unifying theory for modeling NMR relaxation data to examine the molecular motions of alkyl chains. [13] He also used the Cobalt-59 NMR chemical shift for cobalt (III) hexacyanide as both a temperature and pressure probe. [14] During his PhD he developed an interest in personal computers and wrote software programs to fit NMR relaxation data.
Williams continued his work in spectroscopy at the National Research Council (Canada) using EPR spectroscopy to perform single-crystal studies of organometallics compounds.
In 1991, Williams joined Ottawa University as their NMR Facility Manager. He continued his personal interests in multinuclear NMR to perform 2D-NMR experiments examining Selenium exchange in mixed-halogen systems. [15] He also performed Silicon-29 and Tellurium-125 NMR studies.
In 1992 Williams left Canada for Rochester, NY to work for the Eastman Kodak Company as their NMR Technology Leader. At Kodak he used his previous experience in studying alkyl chain related systems to study micelles. [16] He was involved in the early adoption of Liquid Chromatography-NMR into the company and in the development of an Open Access laboratory for chemists to use roboticized analytical instrumentation to generate data. At Kodak he was part of a three-member team that developed a web-based Laboratory information management system (LIMS) system called WIMS, [17] the Web-based Information Management System and it was the first web-based LIMS system in the world to manage chemical structures and spectral data. He was granted two patents while at Kodak, [18] [19]
In 1997 he started work for a Canadian start-up company, Advanced Chemistry Development (ACD/Labs) as their senior product manager. He was responsible for managing all spectroscopy, structure drawing and IUPAC nomenclature, [20] [21] products. While in that role the analytical data management software was expanded to include support for mass spectrometry, infrared spectroscopy, UV-Vis spectroscopy, chromatography and other forms of analytical sciences. His research interests at that time include the development of algorithms for NMR prediction ( [22] and [23] ) and, specifically, development of software approaches to Computer Assisted structure Elucidation, so-called CASE systems. [24] [25] [26] [27] [28] [29] The CASE tools have been used for the purpose of structure revision whereby algorithms have been demonstrated to outperform human interpretation of spectral data. [30] While at ACD/Labs Williams was involved in a number of industry firsts[ citation needed ] including
While at the company he initiated a hobby project to link together chemistry databases on the web. This project was called ChemSpider. ChemSpider was formally announced at the Chicago ACS meeting in March 2007 with a database containing over 10 million compounds sourced from PubChem. In 2007 when he left ACD/Labs he was the Chief Science Officer. He became an independent consultant working with a number of software companies in the cheminformatics domain, such as SimBioSys, and with research organizations to support their cheminformatics efforts. In parallel he continued to develop the ChemSpider platform with a small group of like-minded individuals interested in the development of web-based systems to serve chemists [37] [38] The site is a crowdsourced community for chemistry with chemists depositing their structure collections, spectral data and molecular properties. Williams is focused on educating the community as to the issues of data quality associated with internet chemistry databases. [39] [40]
In May 2009 the Royal Society of Chemistry announced that it had acquired ChemSpider. [41] Williams joined RSC as their Vice President of Strategic Development for ChemSpider.
In May 2015 he joined the United States Environmental Protection Agency to work on the development of websites delivering public access to EPA data [42] and tools for mass spectrometry. [43]
Williams has contributed to the world of "Mobile Chemistry" [44] by contributing to the development of ChemMobi, an iPhone app for accessing millions of chemical compounds and associated data.
Williams is an advocate for Open Notebook Science and is a judge for the Open Notebook Science Challenge. He worked with Jean-Claude Bradley to deliver a web-based game for teaching the interpretation of spectral data utilizing crowdsourced spectroscopy data deposited onto ChemSpider. [45]
Williams introduced an Open Access journal, the ChemSpider Journal of Chemistry, and the development team provided novel online markup technology (ChemMANTIS – Markup And Nomenclature Transformation Integrated System) to allow crowdsourced markup of chemistry related terms linked up, where possible, to the ChemSpider database. Williams is a judge for the Open Notebook Science Challenge. He promotes the use of Open Data, particularly spectral data, publishes in Open Access journals and is an advocate for Open Notebook Science. [46] Williams is an advocate for freeing pre-clinical data from the pharmaceutical industry on the internet. [47] [48] [49] Williams has worked closely with Sean Ekins to advocate the release of pre-competitive pharmaceutical data to the community. He has also participated in the analysis and review of open pharmaceutical data released to the community. [50] [51] [52]
Williams, himself a longtime contributor to Wikipedia has been vocal in questioning the notability requirements of Wikipedia itself, comparing pornstars and scientists. [53] [54]
Williams was the winner of the Jim Gray e-Science award in 2012 [55] and the North Carolina American Chemical Society Distinguished Speaker of the Year Award in 2016. [56]
In nuclear magnetic resonance (NMR) spectroscopy, the chemical shift is the resonant frequency of an atomic nucleus relative to a standard in a magnetic field. Often the position and number of chemical shifts are diagnostic of the structure of a molecule. Chemical shifts are also used to describe signals in other forms of spectroscopy such as photoemission spectroscopy.
Nuclear magnetic resonance spectroscopy, most commonly known as NMR spectroscopy or magnetic resonance spectroscopy (MRS), is a spectroscopic technique based on re-orientation of atomic nuclei with non-zero nuclear spins in an external magnetic field. This re-orientation occurs with absorption of electromagnetic radiation in the radio frequency region from roughly 4 to 900 MHz, which depends on the isotopic nature of the nucleus and increased proportionally to the strength of the external magnetic field. Notably, the resonance frequency of each NMR-active nucleus depends on its chemical environment. As a result, NMR spectra provide information about individual functional groups present in the sample, as well as about connections between nearby nuclei in the same molecule. As the NMR spectra are unique or highly characteristic to individual compounds and functional groups, NMR spectroscopy is one of the most important methods to identify molecular structures, particularly of organic compounds.
Solid-state NMR (ssNMR) spectroscopy is a technique for characterizing atomic level structure in solid materials e.g. powders, single crystals and amorphous samples and tissues using nuclear magnetic resonance (NMR) spectroscopy. The anisotropic part of many spin interactions are present in solid-state NMR, unlike in solution-state NMR where rapid tumbling motion averages out many of the spin interactions. As a result, solid-state NMR spectra are characterised by larger linewidths than in solution state NMR, which can be utilized to give quantitative information on the molecular structure, conformation and dynamics of the material. Solid-state NMR is often combined with magic angle spinning to remove anisotropic interactions and improve the resolution as well as the sensitivity of the technique.
Nuclear magnetic resonance spectroscopy of proteins is a field of structural biology in which NMR spectroscopy is used to obtain information about the structure and dynamics of proteins, and also nucleic acids, and their complexes. The field was pioneered by Richard R. Ernst and Kurt Wüthrich at the ETH, and by Ad Bax, Marius Clore, Angela Gronenborn at the NIH, and Gerhard Wagner at Harvard University, among others. Structure determination by NMR spectroscopy usually consists of several phases, each using a separate set of highly specialized techniques. The sample is prepared, measurements are made, interpretive approaches are applied, and a structure is calculated and validated.
Adriaan "Ad" Bax is a Dutch-American molecular biophysicist. He was born in the Netherlands and is the Chief of the Section on Biophysical NMR Spectroscopy at the National Institutes of Health. He is known for his work on the methodology of biomolecular NMR spectroscopy. He is a corresponding member of the Royal Netherlands Academy of Arts and Sciences, a member of the National Academy of Sciences, a fellow of the American Academy of Arts and Sciences, and a Foreign Member of the Royal Society.
ChemSpider is a freely accessible online database of chemicals owned by the Royal Society of Chemistry. It contains information on more than 100 million molecules from over 270 data sources, each of them receiving a unique identifier called ChemSpider Identifier.
Fragment-based lead discovery (FBLD) also known as fragment-based drug discovery (FBDD) is a method used for finding lead compounds as part of the drug discovery process. Fragments are small organic molecules which are small in size and low in molecular weight. It is based on identifying small chemical fragments, which may bind only weakly to the biological target, and then growing them or combining them to produce a lead with a higher affinity. FBLD can be compared with high-throughput screening (HTS). In HTS, libraries with up to millions of compounds, with molecular weights of around 500 Da, are screened, and nanomolar binding affinities are sought. In contrast, in the early phase of FBLD, libraries with a few thousand compounds with molecular weights of around 200 Da may be screened, and millimolar affinities can be considered useful. FBLD is a technique being used in research for discovering novel potent inhibitors. This methodology could help to design multitarget drugs for multiple diseases. The multitarget inhibitor approach is based on designing an inhibitor for the multiple targets. This type of drug design opens up new polypharmacological avenues for discovering innovative and effective therapies. Neurodegenerative diseases like Alzheimer’s (AD) and Parkinson’s, among others, also show rather complex etiopathologies. Multitarget inhibitors are more appropriate for addressing the complexity of AD and may provide new drugs for controlling the multifactorial nature of AD, stopping its progression.
Carbohydrate NMR spectroscopy is the application of nuclear magnetic resonance (NMR) spectroscopy to structural and conformational analysis of carbohydrates. This method allows the scientists to elucidate structure of monosaccharides, oligosaccharides, polysaccharides, glycoconjugates and other carbohydrate derivatives from synthetic and natural sources. Among structural properties that could be determined by NMR are primary structure, saccharide conformation, stoichiometry of substituents, and ratio of individual saccharides in a mixture. Modern high field NMR instruments used for carbohydrate samples, typically 500 MHz or higher, are able to run a suite of 1D, 2D, and 3D experiments to determine a structure of carbohydrate compounds.
Nuclear magnetic resonance crystallography is a method which utilizes primarily NMR spectroscopy to determine the structure of solid materials on the atomic scale. Thus, solid-state NMR spectroscopy would be used primarily, possibly supplemented by quantum chemistry calculations, powder diffraction etc. If suitable crystals can be grown, any crystallographic method would generally be preferred to determine the crystal structure comprising in case of organic compounds the molecular structures and molecular packing. The main interest in NMR crystallography is in microcrystalline materials which are amenable to this method but not to X-ray, neutron and electron diffraction. This is largely because interactions of comparably short range are measured in NMR crystallography.
Gary Martin is an American chemist and expert in the fields of both NMR spectroscopy and medicinal chemistry. He is a distinguished fellow at the Merck Research Laboratories. He is also a photographer specializing in the capture of images of lighthouses, especially under conditions of extreme weather.
Chemicalize is an online platform for chemical calculations, search, and text processing. It is developed and owned by ChemAxon and offers various cheminformatics tools in freemium model: chemical property predictions, structure-based and text-based search, chemical text processing, and checking compounds with respect to national regulations of different countries.
Sean Ekins is a British pharmacologist and expert in the fields of ADME/Tox, computational toxicology and cheminformatics at Collaborations in Chemistry, a division of corporate communications firm Collaborations in Communications. He is also the editor of four books and a book series for John Wiley & Sons.
Computer-assisted structure elucidation is the technique of using software to generate all possible molecular structures that are consistent with a particular set of spectroscopic data. The subject has been often reviewed. Available CASE software include LSD, SENECA, COCON, CMC-se, and Structure Elucidator.
Gareth Alun Morris is a British scientist who is a Professor of Physical Chemistry, in the School of Chemistry at the University of Manchester.
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David Lyndon Emsley FRSC is a British chemist specialising in solid-state nuclear magnetic resonance and a professor at EPFL. He was awarded the 2012 Grand Prix Charles-Leopold Mayer of the French Académie des Sciences and the 2015 Bourke Award of the Royal Society of Chemistry.
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Dudley Howard Williams was a British biochemist known for utilizing nuclear magnetic resonance (NMR) spectroscopy and mass spectrometry in the study of molecular structure, especially the antibiotic vancomycin.
Melinda Jane Duer is Professor of Biological and Biomedical Chemistry in the Department of Chemistry at the University of Cambridge, and was the first woman to be appointed to an academic position in the department. Her research investigates changes in molecular structure of the extracellular matrix in tissues in disease and during ageing. She serves as Deputy Warden of Robinson College, Cambridge. She is an editorial board member of the Journal of Magnetic Resonance.
Eric Oldfield is a British chemist, the Harriet A. Harlin Professor of Chemistry and a professor of Biophysics at the University of Illinois at Urbana-Champaign. He is known for his work in nuclear magnetic resonance spectroscopy of lipids, proteins, and membranes; of inorganic solids; in computational chemistry, and in microbiology and parasitology. He has received a number of recognitions for his work, including the American Chemical Society's Award in Pure Chemistry, the Royal Society of Chemistry's Meldola Medal and the Biochemical Society's Colworth Medal, and he is a member of the American Association for the Advancement of Science, a Fellow of the Royal Society of Chemistry, and a Fellow of the American Physical Society.
Antony Williams, Ph.D., Vice President, Strategic Development; Head, Cheminformatics for the Royal Society of Chemistry (RSC)
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