Enzyme Class 1 Download

Total Page:16

File Type:pdf, Size:1020Kb

Enzyme Class 1 Download Enzymes General Introduction MI 201 Unit:2 By: Dr. MohammedAzim Bagban Assistant Professor C. U. Shah Institute of Science Ahmedabad What is an enzyme? globular protein which functions as a biological catalyst, Active speeding up reaction site rate by lowering activation energy without being affected by the reaction it catalyse Enzymes are protein in nature (?) Globular protein. Ribozymes are RNA molecule with enzymatic activity. Catalytic behaviour of any enzyme depends upon its primary, secondary, tertiary or quaternary structure. Enzymes of digestive tract and those found in blood are present in inactive form called zymogen or proezymes. Etymology and history • French chemist Anselme Payen was the first to discover an enzyme, diastase, in 1833. • A few decades later, when studying the fermentation of sugar to alcohol by yeast, Louis Pasteur concluded that this fermentation was caused by a vital force contained within the yeast cells called "ferments", which were thought to function only within living organisms. • The conclusion that pure proteins can be enzymes was definitively demonstrated by John Howard Northrop and Wendell Meredith Stanley, who worked on the digestive enzymes pepsin (1930), trypsin and chymotrypsin. These three scientists were awarded the 1946 Nobel Prize in Chemistry. Enzyme Nomenclature . An enzyme's name is often derived from its substrate or the chemical reaction it catalyzes, with the word ending in -ase. Examples are lactase, alcohol dehydrogenase and DNA polymerase. Different enzymes that catalyze the same chemical reaction are called isozymes. The International Union of Biochemistry and Molecular Biology have developed a nomenclature for enzymes, the EC numbers; each enzyme is described by a sequence of four numbers preceded by "EC", which stands for "Enzyme Commission". The first number broadly classifies the enzyme based on its mechanism. Enzyme Nomenclature The top-level classification is: . EC 1, Oxidoreductases: catalyze oxidation/reduction reactions . EC 2, Transferases: transfer a functional group (e.g. a methyl or phosphate group) . EC 3, Hydrolases: catalyze the hydrolysis of various bonds . EC 4, Lyases: cleave various bonds by means other than hydrolysis and oxidation . EC 5, Isomerases: catalyze isomerization changes within a single molecule . EC 6, Ligases: join two molecules with covalent bonds. Active site Enzymes are composed of long chains of amino acids that have folded into a very specific three-dimensional shape which contains an active site. An active site is a region on the surface of an enzyme to which substrates will bind and catalyses a chemical reaction. Enzymes are highly specific for the type of the reaction they catalyze and for their substrate. Co-factor (Prosthetic group) A cofactor is a non-protein chemical compound or metallic ion that is required for an enzyme's activity as a catalyst, a substance that increases the rate of a chemical reaction. Cofactors can be considered "helper molecules" that assist in biochemical transformations. Cofactors can be divided into two types: inorganic ions and complex organic molecules called coenzymes. Coenzymes are further divided into two types. The first is called a "prosthetic group", which consists of a coenzyme that is tightly or even covalently, and permanently bound to a protein. he second type of coenzymes are called "cosubstrates", and are transiently bound to the protein. Cosubstrates may be released from a protein at some point, and then rebind later. Coenzyme examples Cofactor examples Distribution of Enzyme in cells Enzyme Intracellular Extracellular Enzyme Enzyme Soluble Particulate Periplasmic Enzymes Enzymes Enzymes Extracellular Enzymes An exoenzyme, or extracellular enzyme, is an enzyme that is secreted by a cell and functions outside that cell. Exoenzymes are produced by both prokaryotic and eukaryotic cells and have been shown to be a crucial component of many biological processes. Most often these enzymes are involved in the breakdown of larger macromolecules. The breakdown of these larger macromolecules is critical for allowing their constituents to pass through the cell membrane and enter into the cell. For humans and other complex organisms, this process is best characterized by the digestive system which breaks down solid food. Bacteria and fungi also produce exoenzymes to digest nutrients in their environment, and these organisms can be used to conduct laboratory assays to identify the presence and function of such exoenzymes. Some pathogenic species also use exoenzymes as virulence factors to assist in the spread of these disease-causing microorganisms. Intracellular Enzymes An endoenzyme, or intracellular enzyme, is an enzyme that functions within the cell in which it was produced and the majority of enzymes fall within this category. Soluble Enzymes: Found within the cytoplasm and associated with metabolic activity of cytoplasm. Particulate enzymes: Found within embedded in cell membrane. Associated with metabolic activity leading to ATP generation. Periplasmic enzymes: Located in the periplasmic regions and associated with biosynthesis of cell wall constituents. Mechanism of enzyme action The enzymatic reactions takes place by binding of the substrate with the active site of the enzyme molecule by several weak bonds. E + S ‹--------› ES --------› E + P Formation of ES complex is the first step in the enzyme catalyzed reaction then ES complex is subsequently converted to product and free enzyme. "Lock and key" or Template model Induced-fit model References o Stryer L, Berg JM, Tymoczko JL (2002). Biochemistry (5th ed.). San Francisco: W.H. Freeman. ISBN 0-7167-4955-6.open access o Murphy JM, Farhan H, Eyers PA (2017). "Bio-Zombie: the rise of pseudoenzymes in biology". Biochem Soc Trans. 45 (2): 537–544. doi:10.1042/bst20160400. PMID 28408493. o Murphy JM, et al. (2014). "A robust methodology to subclassify pseudokinases based on their nucleotide-binding properties". Biochemical Journal. 457 (2): 323–334. doi:10.1042/BJ20131174. PMC 5679212. PMID 24107129. o adzicka A, Wolfenden R (January 1995). "A proficient enzyme". Science. 267 (5194): 90–931. Bibcode:1995Sci...267...90R. doi:10.1126/science.7809611. PMID 7809611. S2CID 8145198. o Holmes FL (2003). "Enzymes". In Heilbron JL (ed.). The Oxford Companion to the History of Modern Science. Oxford: Oxford University Press. p. 270. ISBN 9780199743766. o Nomenclature Committee. "Classification and Nomenclature of Enzymes by the Reactions they Catalyse". International Union of Biochemistry and Molecular Biology (NC-IUBMB). School of Biological and Chemical Sciences, Queen Mary, University of London. Archived from the original on 17 March 2015. Retrieved 6 March 2015. o Nomenclature Committee. "EC 2.7.1.1". International Union of Biochemistry and Molecular Biology (NC-IUBMB). School of Biological and Chemical Sciences, Queen Mary, University of London. Archived from the original on 1 December 2014. Retrieved 6 March 2015. o Anfinsen CB (July 1973). "Principles that govern the folding of protein chains". Science. 181 (4096): 223–30. Bibcode:1973Sci...181..223A. doi:10.1126/science.181.4096.223. PMID 4124164. o Dunaway-Mariano D (November 2008). "Enzyme function discovery". Structure. 16 (11): 1599–600. doi:10.1016/j.str.2008.10.001. PMID 19000810. o Hasim, Onn (2010). Coenzyme, Cofactor and Prosthetic Group – Ambiguous Biochemical Jargon. Kuala Lumpur: Biochemical Education. pp. 93–94. o "coenzymes and cofactors". Retrieved 2007-11-17. o "Enzyme Cofactors". Archived from the original on 2003-05-05. Retrieved 2007-11-17. o Crane FL (December 2001). "Biochemical functions of coenzyme Q10". Journal of the American College of Nutrition. 20 (6): 591–8. doi:10.1080/07315724.2001.10719063. PMID 11771674. Archived from the original on 16 December 2008. Thank You….. Write me on: [email protected] [email protected] .
Recommended publications
  • Curriculum Vitae Prof. Dr. John Howard Northrop
    Curriculum Vitae Prof. Dr. John Howard Northrop Name: John Howard Northrop Lebensdaten: 5. Juli 1891 ‐ 27. Mai 1987 John Howard Northrop war ein US‐amerikanischer Biochemiker, Biophysiker und Bakteriologe. Er lieferte Arbeiten zur Charakterisierung von Proteinen. Darüber hinaus listete er Grundsätze auf, die bei der Isolierung und Reindarstellung von Enzymen generell beobachtet werden können. Außerdem entwickelte er experimentelle Methoden, mit denen nachgewiesen werden konnte, dass kristallisierte Proteine reine Verbindungen sind, die volle Enzymaktivität besitzen. Für die Darstellung von Enzymen und Virusproteinen in reiner Form wurde er 1946 gemeinsam mit seinem Landsmann, dem Biochemiker Wendell Meredith Stanley, mit dem Nobelpreis für Chemie ausgezeichnet. Akademischer und beruflicher Werdegang John Howard Northrop studierte ab 1908 Chemie und Zoologie an der Columbia University in New York. Die Ausbildung schloss er 1912 mit einem Bachelor of Science ab. Ein Jahr später erhielt er den Master of Arts. 1915 wurde er im Fach Chemie promoviert. Im Anschluss war er mit einem Stipendium am Jacques Loeb Laboratory tätig, das zum Rockefeller Institute gehört. 1916 nahm man ihn in den Mitarbeiterstab des Rockefeller Institute for Medical Research auf, 1924 wurde er Vollmitglied. Northrop blieb dort bis zu seiner Emeritierung im Jahr 1961. Während des Ersten Weltkriegs verpflichtete sich Northrop für den Kriegsdienst. Er war im Rang eines Hauptmanns tätig. Nach Kriegsende wandte er sich wieder seiner Forschungsarbeit am Rockefeller Institute in New York zu. 1939 war Northrop Gastprofessor an der University of California; ein Jahr später Lektor an der John Hopkins University. 1942 wurde er in die National Defense Research Commission berufen, ein Gremium, über das die amerikanische Forschung während des Zweiten Weltkriegs koordiniert Nationale Akademie der Wissenschaften Leopoldina www.leopoldina.org 1 wurde.
    [Show full text]
  • Plant Viruses
    Western Plant Diagnostic Network1 First Detector News A Quarterly Pest Update for WPDN First Detectors Spring 2015 edition, volume 8, number 2 In this Issue Page 1: Editor’s Note Dear First Detectors, Pages 2 – 3: Intro to Plant Plant viruses cause many important plant diseases and are Viruses responsible for huge losses in crop production and quality in Page 4: Virus nomenclature all parts of the world. Plant viruses can spread very quickly because many are vectored by insects such as aphids and Page 5 – Most Serious World Plant Viruses & Symptoms whitefly. They are a major pest of crop production as well as major pests of home gardens. By mid-summer many fields, Pages 6 – 7: Plant Virus vineyards, orchards, and gardens will see the effects of plant Vectors viruses. The focus of this edition is the origin, discovery, taxonomy, vectors, and the effects of virus infection in Pages 7 - 10: Grapevine plants. There is also a feature article on grapevine viruses. Viruses And, as usual, there are some pest updates from the West. Page 10: Pest Alerts On June 16 – 18, the WPDN is sponsoring the second Invasive Snail and Slug workshop at UC Davis. The workshop Contact us at the WPDN Regional will be recorded and will be posted on the WPDN and NPDN Center at UC Davis: home pages. Have a great summer and here’s hoping for Phone: 530 754 2255 rain! Email: [email protected] Web: https://wpdn.org Please find the NPDN family of newsletters at: Editor: Richard W. Hoenisch @Copyright Regents of the Newsletters University of California All Rights Reserved Western Plant Diagnostic Network News Plant Viruses 2 Ag, Manitoba Photo courtesy Photo Food, and Rural Initiatives and Food, of APS Photo by Giovanni Martelli, U of byBari Giovanni Photo Grapevine Fanleaf Virus Peanut leaf with Squash Mosaic Virus tomato spotted wilt virus Viruses are infectious pathogens that are too small to be seen with a light microscope, but despite their small size they can cause chaos.
    [Show full text]
  • Timeline of Genomics (1901–1950)*
    Research Resource Timeline of Genomics (1901{1950)* Year Event and Theoretical Implication/Extension Reference 1901 Hugo de Vries adopts the term MUTATION to de Vries, H. 1901. Die Mutationstheorie. describe sudden, spontaneous, drastic alterations in Veit, Leipzig, Germany. the hereditary material of Oenothera. Thomas Harrison Montgomery studies sper- 1. Montgomery, T.H. 1898. The spermato- matogenesis in various species of Hemiptera and ¯nds genesis in Pentatoma up to the formation that maternal chromosomes only pair with paternal of the spermatid. Zool. Jahrb. 12: 1-88. chromosomes during meiosis. 2. Montgomery, T.H. 1901. A study of the chromosomes of the germ cells of the Metazoa. Trans. Am. Phil. Soc. 20: 154-236. Clarence Ervin McClung postulates that the so- McClung, C.E. 1901. Notes on the acces- called accessory chromosome (now known as the \X" sory chromosome. Anat. Anz. 20: 220- chromosome) is male determining. 226. Hermann Emil Fischer(1902 Nobel Prize Laure- 1. Fischer, E. and Fourneau, E. 1901. UberÄ ate for Chemistry) and Ernest Fourneau report einige Derivate des Glykocolls. Ber. the synthesis of the ¯rst dipeptide, glycylglycine. In Dtsch. Chem. Ges. 34: 2868-2877. 1902 Fischer introduces the term PEPTIDES. 2. Fischer, E. 1907. Syntheses of polypep- tides. XVII. Ber. Dtsch. Chem. Ges. 40: 1754-1767. 1902 Theodor Boveri and Walter Stanborough Sut- 1. Boveri, T. 1902. UberÄ mehrpolige Mi- ton found the chromosome theory of heredity inde- tosen als Mittel zur Analyse des Zellkerns. pendently. Verh. Phys -med. Ges. WÄurzberg NF 35: 67-90. 2. Boveri, T. 1903. UberÄ die Konstitution der chromatischen Kernsubstanz. Verh. Zool.
    [Show full text]
  • Fang Family San Francisco Examiner Photograph Archive Negative Files, Circa 1930-2000, Circa 1930-2000
    http://oac.cdlib.org/findaid/ark:/13030/hb6t1nb85b No online items Finding Aid to the Fang family San Francisco examiner photograph archive negative files, circa 1930-2000, circa 1930-2000 Bancroft Library staff The Bancroft Library University of California, Berkeley Berkeley, CA 94720-6000 Phone: (510) 642-6481 Fax: (510) 642-7589 Email: [email protected] URL: http://bancroft.berkeley.edu/ © 2010 The Regents of the University of California. All rights reserved. Finding Aid to the Fang family San BANC PIC 2006.029--NEG 1 Francisco examiner photograph archive negative files, circa 1930-... Finding Aid to the Fang family San Francisco examiner photograph archive negative files, circa 1930-2000, circa 1930-2000 Collection number: BANC PIC 2006.029--NEG The Bancroft Library University of California, Berkeley Berkeley, CA 94720-6000 Phone: (510) 642-6481 Fax: (510) 642-7589 Email: [email protected] URL: http://bancroft.berkeley.edu/ Finding Aid Author(s): Bancroft Library staff Finding Aid Encoded By: GenX © 2011 The Regents of the University of California. All rights reserved. Collection Summary Collection Title: Fang family San Francisco examiner photograph archive negative files Date (inclusive): circa 1930-2000 Collection Number: BANC PIC 2006.029--NEG Creator: San Francisco Examiner (Firm) Extent: 3,200 boxes (ca. 3,600,000 photographic negatives); safety film, nitrate film, and glass : various film sizes, chiefly 4 x 5 in. and 35mm. Repository: The Bancroft Library. University of California, Berkeley Berkeley, CA 94720-6000 Phone: (510) 642-6481 Fax: (510) 642-7589 Email: [email protected] URL: http://bancroft.berkeley.edu/ Abstract: Local news photographs taken by staff of the Examiner, a major San Francisco daily newspaper.
    [Show full text]
  • Federation Member Society Nobel Laureates
    FEDERATION MEMBER SOCIETY NOBEL LAUREATES For achievements in Chemistry, Physiology/Medicine, and PHysics. Award Winners announced annually in October. Awards presented on December 10th, the anniversary of Nobel’s death. (-H represents Honorary member, -R represents Retired member) # YEAR AWARD NAME AND SOCIETY DOB DECEASED 1 1904 PM Ivan Petrovich Pavlov (APS-H) 09/14/1849 02/27/1936 for work on the physiology of digestion, through which knowledge on vital aspects of the subject has been transformed and enlarged. 2 1912 PM Alexis Carrel (APS/ASIP) 06/28/1873 01/05/1944 for work on vascular suture and the transplantation of blood vessels and organs 3 1919 PM Jules Bordet (AAI-H) 06/13/1870 04/06/1961 for discoveries relating to immunity 4 1920 PM August Krogh (APS-H) 11/15/1874 09/13/1949 (Schack August Steenberger Krogh) for discovery of the capillary motor regulating mechanism 5 1922 PM A. V. Hill (APS-H) 09/26/1886 06/03/1977 Sir Archibald Vivial Hill for discovery relating to the production of heat in the muscle 6 1922 PM Otto Meyerhof (ASBMB) 04/12/1884 10/07/1951 (Otto Fritz Meyerhof) for discovery of the fixed relationship between the consumption of oxygen and the metabolism of lactic acid in the muscle 7 1923 PM Frederick Grant Banting (ASPET) 11/14/1891 02/21/1941 for the discovery of insulin 8 1923 PM John J.R. Macleod (APS) 09/08/1876 03/16/1935 (John James Richard Macleod) for the discovery of insulin 9 1926 C Theodor Svedberg (ASBMB-H) 08/30/1884 02/26/1971 for work on disperse systems 10 1930 PM Karl Landsteiner (ASIP/AAI) 06/14/1868 06/26/1943 for discovery of human blood groups 11 1931 PM Otto Heinrich Warburg (ASBMB-H) 10/08/1883 08/03/1970 for discovery of the nature and mode of action of the respiratory enzyme 12 1932 PM Lord Edgar D.
    [Show full text]
  • Contributions of Civilizations to International Prizes
    CONTRIBUTIONS OF CIVILIZATIONS TO INTERNATIONAL PRIZES Split of Nobel prizes and Fields medals by civilization : PHYSICS .......................................................................................................................................................................... 1 CHEMISTRY .................................................................................................................................................................... 2 PHYSIOLOGY / MEDECINE .............................................................................................................................................. 3 LITERATURE ................................................................................................................................................................... 4 ECONOMY ...................................................................................................................................................................... 5 MATHEMATICS (Fields) .................................................................................................................................................. 5 PHYSICS Occidental / Judeo-christian (198) Alekseï Abrikossov / Zhores Alferov / Hannes Alfvén / Eric Allin Cornell / Luis Walter Alvarez / Carl David Anderson / Philip Warren Anderson / EdWard Victor Appleton / ArthUr Ashkin / John Bardeen / Barry C. Barish / Nikolay Basov / Henri BecqUerel / Johannes Georg Bednorz / Hans Bethe / Gerd Binnig / Patrick Blackett / Felix Bloch / Nicolaas Bloembergen
    [Show full text]
  • Alfred Mirsky
    NATIONAL ACADEMY OF SCIENCES A L F R E D E Z R A M IRSKY 1900—1974 A Biographical Memoir by S E Y M O U R S . CO HEN Any opinions expressed in this memoir are those of the author(s) and do not necessarily reflect the views of the National Academy of Sciences. Biographical Memoir COPYRIGHT 1998 NATIONAL ACADEMIES PRESS WASHINGTON D.C. CourtesyoftheRockefellerUniversityArchives,NewYork,NewYork ALFRED EZRA MIRSKY October 17, 1900—June 19, 1974 BY SEYMOUR S. COHEN LFRED EZRA MIRSKY, SON OF Michael David Mirsky and Frieda AIttelson Mirsky, graduated from the Ethical Culture School in New York City and from Harvard College, obtain- ing a B.A. degree in 1922. He studied at the College of Physicians and Surgeons of Columbia University for two years. On receipt of a fellowship from the National Re- search Council in 1924, he worked at Cambridge University under Joseph Barcroft during the academic year 1924-1925, and completed his graduate studies under Lawrence J. Henderson at Harvard. He wrote a dissertation titled “The Haemoglobin Molecule” and received a Ph.D. from Cam- bridge in 1926. The molecularity of haemoglobin and the molecular weight of the protein were established by Theodor Svedberg and Gilbert Adair in 1925. Their results demonstrated that pro- teins are rigorously definable species of large molecules, and were important in showing that proteins, despite their size, should be described in the molecular terms of the chemist. The initial postulates of protoplasmic components as being essentially undefinable, dispersible, and colloidal aggregates were eventually replaced by the view that the Reprinted with permission from Dictionary of Scientific Biography, vol.
    [Show full text]
  • Research Organizations and Major Discoveries in Twentieth-Century Science: a Case Study of Excellence in Biomedical Research Hollingsworth, J
    www.ssoar.info Research organizations and major discoveries in twentieth-century science: a case study of excellence in biomedical research Hollingsworth, J. Rogers Veröffentlichungsversion / Published Version Arbeitspapier / working paper Zur Verfügung gestellt in Kooperation mit / provided in cooperation with: SSG Sozialwissenschaften, USB Köln Empfohlene Zitierung / Suggested Citation: Hollingsworth, J. R. (2002). Research organizations and major discoveries in twentieth-century science: a case study of excellence in biomedical research. (Papers / Wissenschaftszentrum Berlin für Sozialforschung, 02-003). Berlin: Wissenschaftszentrum Berlin für Sozialforschung gGmbH. https://nbn-resolving.org/urn:nbn:de:0168-ssoar-112976 Nutzungsbedingungen: Terms of use: Dieser Text wird unter einer Deposit-Lizenz (Keine This document is made available under Deposit Licence (No Weiterverbreitung - keine Bearbeitung) zur Verfügung gestellt. Redistribution - no modifications). We grant a non-exclusive, non- Gewährt wird ein nicht exklusives, nicht übertragbares, transferable, individual and limited right to using this document. persönliches und beschränktes Recht auf Nutzung dieses This document is solely intended for your personal, non- Dokuments. Dieses Dokument ist ausschließlich für commercial use. All of the copies of this documents must retain den persönlichen, nicht-kommerziellen Gebrauch bestimmt. all copyright information and other information regarding legal Auf sämtlichen Kopien dieses Dokuments müssen alle protection. You are not allowed
    [Show full text]
  • MEMORIA 2020.Indd
    1 INSTITUTO DE ESPAÑA MEMORIAS ACADÉMICAS DE LA REAL ACADEMIA DE MEDICINA Y CIRUGÍA DE SEVILLA AÑO 2019 MEMORIAS ACADÉMICAS DE LA REAL ACADEMIA DE MEDICINA Y CIRUGÍA DE SEVILLA. AÑO 2019 No está permitida la reproducción total o parcial de este libro, ni su tratamiento informático, ni la transmisión de ninguna forma o por cualquier medio, ya sea electrónico, mecánico, por fotocopia, por registro u otros métodos, sin el permiso previo y por escrito de los titulares del Copyright. DERECHOS RESERVADOS © 2015 Edita: Real Academia de Medicina y Cirugía de Sevilla Imprime: Gráficas San Antonio, S.L. Almansa, 7 - 41001 SEVILLA Teléfono: 954 22 27 47 e-mail: [email protected] I.S.B.N: 978-84-09-0.3979-1 Depósito Legal: SE-1432-2018 IMPRESO EN ESPAÑA – PRINTED IN SPAIN 4 ÍNDICE 1) ACTOS INSTITUCIONALES Sesión inaugural del curso académico 2019 Memoria de las actividades de la Real Academia de Medicina y Cirugía de Sevilla. lmo. Dr. D. Federico Arguelles Martín, Académico Numerario y Secretario General ................................... 11 “Discurso protocolario de apertura del curso académico “A corazón abierto: 50 años de cirugía cardiaca”. Ilmo. Dr. D. Carlos Infantes Alcón ...................................................................................... 25 Obituario .............................................................................................. 35 Día de la Academia Conferencia “Claves presentes y futuras del Sistema Sanitario Público de Andalucía”, por el Excmo. Sr. Consejero de Salud y Familias de la Junta de Andalucía Dr. D. Jesús Aguirre Muñoz. Entrega del Diploma de Distinción a los Académicos Correspondientes .............................................................................. 37 Actos solemnes de recepción de Académicos Académico de Honor Excmo. Sr. Dr. D. Ramiro Rivera López ..................................... 41 Académicos Honorarios Excmo. Sr. Dr.
    [Show full text]
  • The Beginnings of Pancreatology As a Field of Experimental and Clinical Medicine
    Hindawi Publishing Corporation BioMed Research International Volume 2015, Article ID 128095, 5 pages http://dx.doi.org/10.1155/2015/128095 Review Article The Beginnings of Pancreatology as a Field of Experimental and Clinical Medicine Piotr Ceranowicz,1 Jakub Cieszkowski,1 Zygmunt Warzecha,1 Beata KuVnierz-Cabala,2 and Artur DembiNski1 1 Department of Physiology, Jagiellonian University Medical College, 16 Grzegorzecka Street, 31-531 Krakow, Poland 2Department of Diagnostics, Chair of Clinical Biochemistry, Jagiellonian University Medical College, 15 A Kopernika Street, 31-501 Krakow, Poland Correspondence should be addressed to Piotr Ceranowicz; [email protected] Received 23 March 2015; Accepted 24 April 2015 Academic Editor: Flavia Prodam Copyright © 2015 Piotr Ceranowicz et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. This review presents the history of discoveries concerning the pancreas. In antiquity and the Middle Ages knowledge aboutthe anatomy of the pancreas was very limited and its function was completely unknown. Significant progress was first made in the seventeenth and eighteenth centuries. Johann Georg Wirsung,¨ the prosector of the University of Padua, discovered the main pancreatic duct, and Giovanni Santorini discovered the accessory duct. Regnier de Graaf was the first to perform pancreatic exocrine studies, and Paul Langerhans’s 1869 discovery of pancreatic islets was the first step toward recognizing the pancreas as an endocrine gland. The twentieth century brought the discovery of insulin and other pancreatic hormones. To date, histochemical staining, transmission electron microscopy, and immunohistochemistry enabled the discovery of five cell types with identified hormonal products in adult human pancreatic islets.
    [Show full text]
  • 24 August 2013 Seminar Held
    PROCEEDINGS OF THE NOBEL PRIZE SEMINAR 2012 (NPS 2012) 0 Organized by School of Chemistry Editor: Dr. Nabakrushna Behera Lecturer, School of Chemistry, S.U. (E-mail: [email protected]) 24 August 2013 Seminar Held Sambalpur University Jyoti Vihar-768 019 Odisha Organizing Secretary: Dr. N. K. Behera, School of Chemistry, S.U., Jyoti Vihar, 768 019, Odisha. Dr. S. C. Jamir Governor, Odisha Raj Bhawan Bhubaneswar-751 008 August 13, 2013 EMSSSEM I am glad to know that the School of Chemistry, Sambalpur University, like previous years is organizing a Seminar on "Nobel Prize" on August 24, 2013. The Nobel Prize instituted on the lines of its mentor and founder Alfred Nobel's last will to establish a series of prizes for those who confer the “greatest benefit on mankind’ is widely regarded as the most coveted international award given in recognition to excellent work done in the fields of Physics, Chemistry, Physiology or Medicine, Literature, and Peace. The Prize since its introduction in 1901 has a very impressive list of winners and each of them has their own story of success. It is heartening that a seminar is being organized annually focusing on the Nobel Prize winning work of the Nobel laureates of that particular year. The initiative is indeed laudable as it will help teachers as well as students a lot in knowing more about the works of illustrious recipients and drawing inspiration to excel and work for the betterment of mankind. I am sure the proceeding to be brought out on the occasion will be highly enlightening.
    [Show full text]
  • The College of Chemistry 1948
    UC Berkeley College History Title The College of Chemistry, UC Berkeley, 1948-1966 Permalink https://escholarship.org/uc/item/6g9228zg Author Myers, Rollie J. Publication Date 1990 Peer reviewed eScholarship.org Powered by the California Digital Library University of California The College of Chemistry University of California, Berkeley 1948-1966 By Professor of Chemistry Rollie J. Myers Preface Several people have asked me to put down some history about the College of Chemistry. William Jolly has already done this in great detail, but this discourse will be more of a narrative and at times more of a worm’s eye view of the college all from the viewpoint of a graduate student who arrived in 1948 and who then stayed on as a faculty member. Lewis Hall was first occupied in 1948, and by 1966 Latimer and Hildebrand Halls were finished. The Chemistry Plaza that we know today was then complete. Rollie J. Myers (1924-2016) By 1948 the College had fully recovered from G.N. Lewis’s death and from World War II. It was an important year since Lewis Hall, the first substantial College building built since Gilman Hall, was made ready for use. After Lewis stepped down in 1941, the College was first led by two of Lewis’ old associates, Wendell Latimer and Joel Hildebrand. Latimer came to Berkeley as a graduate student and as a young faculty member in 1921, and he built the first apparatus in the United States for the liquefaction of hydrogen. His interests were rather broad, and his book, “Oxidation States of the Elements and their Potentials in Aqueous Solutions”, aka Ox-Pot, was very well known.
    [Show full text]