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Kohen Curriculum Vitae
Curriculum Vitae Amnon Kohen Department of Chemistry Tel: (319) 335-0234 University of Iowa FAX: (319) 335-1270 Iowa City, IA 52242 [email protected] EDUCATION AND PROFESSIONAL HISTORY Education D.Sc., Chemistry 1989-1994 Technion – Israel Institute of Technology, Haifa, Israel Advisor: Professor T. Baasov Topic: Mechanistic Studies of the Enzyme KDO8P Synthase B.Sc., Chemistry (with Honors) 1986-1989 Hebrew University, Jerusalem, Israel Positions Professor 2010-Present Department of Chemistry, University of Iowa, Iowa City, IA and Molecular and Cellular Biology Program, and MSTP faculty member Associate Professor 2005-2010 Department of Chemistry, University of Iowa, Iowa City, IA and Molecular and Cellular Biology Program Assistant Professor 1999-2005 Department of Chemistry, University of Iowa, Iowa City, IA Postgraduate Researcher 1997-1999 With Professor Judith Klinman Department of Chemistry, University of California, Berkeley Topic: Hydrogen Tunneling in Biology: Alcohol Dehydrogenases Postgraduate Fellow 1995-1997 With Professor Judith Klinman Department of Chemistry, University of California, Berkeley Topic: Hydrogen Tunneling in Biology: Glucose Oxidase Visiting Scholar Fall 1994 With Professor Karen S. Anderson Department of Pharmacology, Yale Medical School, New Haven, CT Kohen, A. Affiliations American Society for Biochemistry and Molecular Biology (ASBMB, 2013 - present) Center for Biocatalysis and Bioprocessing (CBB) University of Iowa (2000-Present) The Interdisciplinary Graduate Program in Molecular Biology, University of Iowa (2003- Present) American Association for the Advancement of Science (AAAS, 2011-present) American Chemical Society (1995-Present) Divisions: Organic Chemistry, Physical Chemistry, Biochemistry Sigma Xi (1997-Present) Protein Society (1996-1998) Honors and Awards • Career Development Award (University of Iowa- 2015-2016) • Graduate College Outstanding Faculty Mentor Award (2015). -
Crystallographers Notes and News Groups and Generates the Required This Section Is Intendeed to Be a Series of Short Para- Symmetry Instructions for ORTEX
COMPUTER PROGRAM ABSTRACTS 439 in the SHELX file for all space Crystallographers Notes and News groups and generates the required This section is intendeed to be a series of short para- symmetry instructions for ORTEX. graphs dealing with the activities of crystallographers, J. Appl. Cryst. (1994). 27, 439-440 ORIN generates instructions for 'long' such as their changes of position, promotions, as- bonds, can translate the asymmetric sumption of significant new duties, honours etc. Items The new high-resolution neutron powder for inclusion, subject to the approval of the Editorial unit and can append unit-cell corners Board, shouldbe sent to The Executive Sectretary, 2 diffractometer (HRNPD) is now available to the atom list. A 'fast' colour-coded Abbey Square, ChesterCH1 2HU, England. at the Brookhaven high-flux beam reac- stick rotator is provided to allow rapid tor (HFBR). This new user facility offers view selection. ORTEX will generate resolution in neutron powder diffraction drawings of this view with many options. J. AppL Cryst. (1994). 27, 439 patterns exceeding that of many 'home Some of the options are: bonds only, laboratory' X-ray diffractometers in the bonds and atom outlines, bonds and Professor Anthony Kevin Cheetham, high-angle region where the highest thermal ellipsoids and bonds with atom Director of the Materials Research Lab- peak densities usually occur. First outlines and atom-centred numbering in oratory at the University of California operated on 1 July 1993, the HRNPD two print sizes. Any view may be rotated at Santa Barbara, USA, and Professor has an instrumental profile that is smooth on any of x, y and z in any order. -
Curriculum Vitae Natalie G. Ahn
Natalie G. Ahn Curriculum Vitae Natalie G. Ahn ADDRESS: Department of Biochemistry Jennie Smoly Caruthers Biotechnology Building 3415 Colorado Avenue, 596 UCB University of Colorado at Boulder Boulder, CO 80309-0596 Phone: (303) 492-4799 (Phone) Email: [email protected] I. ACADEMICS EDUCATION Postdoctoral Fellow, 1988-1990, Department of Pharmacology, Univ. of Washington, Seattle Research advisor: Edwin G. Krebs Postdoctoral Fellow, 1985-1987, Department of Medicine, Univ of Washington, Seattle Research advisor: Christoph de Haën Ph.D.,1985, Department of Chemistry University of California, Berkeley Thesis advisor: Judith P. Klinman 1979-1981 Teaching Assistant, undergraduate chemistry, Dept. of Chemistry 1981-1985 Research Assistant, Dept. of Chemistry B.S., 1979, Department of Chemistry, University of Washington, Seattle Undergraduate senior thesis advisor: Lyle H. Jensen, Department of Biological Structure Undergraduate research advisor: David C. Teller, Department of Biochemistry APPOINTMENTS 2018-present Distinguished Professor, University of Colorado 2003-present Associate Director, BioFrontiers Institute, Univ. Colorado, Boulder 1994-2014 Investigator, Howard Hughes Medical Institute (1994-2002 Assistant Investigator; 2003-2004 Associate Investigator; 2005-2014 Investigator) 1993-present Member, UCHSC Cancer Center, Univ. Colorado Health Sciences Center, Denver 1992-2018 Professor, Department of Chemistry and Biochemistry, Univ. Colorado, Boulder (1992-1998 Assistant Professor; 1998-2003 Associate Professor; 2003-present Professor) 1990-1992 Research Assistant Professor, Department of Biochemistry, Univ. Washington, Seattle 3 Natalie G. Ahn II. HONORS 2018 Distinguished Professor, University of Colorado 2018 Member, National Academy of Sciences 2018 Member, American Academy of Arts and Sciences 2016-2018 President, American Society of Biochemistry and Molecular Biology 2012 Professor of Distinction, College of Arts & Sciences, U. -
Minnesota Academy of Science Newsletter
Fall 2014 Vol. 6, No. 3 Minnesota Academy of Science Newsletter Your Support Can Make a Difference By Celia Waldock, Executive Director Innovation is widely recognized as a driver of economic growth with STEM professions the basis for a successful, globally competitive and innovative US and Minnesota economy. By 2018, Minnesota will need to fill 188,000 STEM and STEM-related jobs.1 During the next decade, overall U.S. demand for scientists and engineers is expected to increase at four times the rate for all other occupations.1 And STEM education is the essential element. Everyone needs to have the fundamental STEM skills that form the basis for lifelong In this Issue learning – inquiry, observation, analysis, synthesis and reinvention. Yet in 2011, 8th-graders in 11 other countries achieved higher The importance of STEM Ed ...1 averages in mathematics scores than in the US, performing at or Donate Stock .................3 above the Advanced international mathematics benchmark. At the same time, 8th-graders in 12 other countries achieved higher Message from the President ..4 averages in science scores than in the US, performing at or above Science Salon.................5 the Advanced international science benchmarks.2 Fracking Wastewater .........8 Notably, only one in five STEM college students felt that their K–12 The World of 3M Innovation . 9 education prepared them extremely well for their college courses Smith Hall Centennial........10 in STEM.3 And the number of U.S. companies reporting difficulty in Archiving the Journal ........12 filling positions because of a lack of skills grew from 14 percent in 4 Winchell Advisor Perspective 13 2010 to almost 40 percent by 2013. -
Winter for the Membership of the American Crystallographic Association, P.O
AMERICAN CRYSTALLOGRAPHIC ASSOCIATION NEWSLETTER Number 4 Winter 2004 ACA 2005 Transactions Symposium New Horizons in Structure Based Drug Discovery Table of Contents / President's Column Winter 2004 Table of Contents President's Column Presidentʼs Column ........................................................... 1-2 The fall ACA Council Guest Editoral: .................................................................2-3 meeting took place in early 2004 ACA Election Results ................................................ 4 November. At this time, News from Canada / Position Available .............................. 6 Council made a few deci- sions, based upon input ACA Committee Report / Web Watch ................................ 8 from the membership. First ACA 2004 Chicago .............................................9-29, 38-40 and foremost, many will Workshop Reports ...................................................... 9-12 be pleased to know that a Travel Award Winners / Commercial Exhibitors ...... 14-23 satisfactory venue for the McPherson Fankuchen Address ................................38-40 2006 summer meeting was News of Crystallographers ...........................................30-37 found. The meeting will be Awards: Janssen/Aminoff/Perutz ..............................30-33 held at the Sheraton Waikiki Obituaries: Blow/Alexander/McMurdie .................... 33-37 Hotel in Honolulu, July 22-27, 2005. Council is ACA Summer Schools / 2005 Etter Award ..................42-44 particularly appreciative of Database Update: -
One Million Structures and Counting the Journey, the Insights, and the Future of the CSD
One Million Structures and Counting The journey, the insights, and the future of the CSD Suzanna Ward The Cambridge Crystallographic Data Centre ECM32 – Wednesday 21st August 2019 2 The Cambridge Structural Database (CSD) 1,013,731 ▪ Every published Structures structure An N-heterocycle published produced by a that year ▪ Inc. ASAP & early view chalcogen-bonding ▪ CSD Communications catalyst. Determined Structures at Shandong published ▪ Patents University in China by previously Yao Wang and his ▪ University repositories team. XOPCAJ - The millionth CSD structure. ▪ Every entry enriched and annotated by experts ▪ Discoverability of data and knowledge ▪ Sustainable for over 54 years 3 Inside the CSD Organic ligands Additional data Organic Metal-Organic • Drugs • 10,860 polymorph families 43% 57% • Agrochemicals • 169,218 melting points • At least one transition metal, Pigments • 840,667 crystal colours lanthanide, actinide or any of Al, • Explosives Ga, In, Tl, Ge, Sn, Pb, Sb, Bi, Po • 700,002 crystal shapes • Protein ligands • 23,622 bioactivity details Polymeric: 11% Polymeric: • 9,740 natural source data Not Polymeric Metal-Organic • > 250,000 oxidation states 89% • Metal Organic Frameworks • Models for new catalysts ligand Links/subsets • Porous frameworks for gas s • Drugbank storage • Druglike • Fundamental chemical bonding • MOFs Single Multi ligands • PDB ligands Component Component • PubChem 56% 44% • ChemSpider • Pesticides 4 1965 The sound of music • Film first released in 1965 • Highest grossing film of 1965 • Set in Austria 5 The 1960s Credits: NASA Credits: Thegreenj 6 The vision • Established in 1965 by Olga Kennard • She and J.D. Bernal had a vision that a collective use of data would lead to new knowledge and generate insights J.D. -
Microgravity and Macromolecular Crystallography Craig E
CRYSTAL GROWTH & DESIGN 2001 VOL. 1, NO. 1 87-99 Review Microgravity and Macromolecular Crystallography Craig E. Kundrot,* Russell A. Judge, Marc L. Pusey, and Edward H. Snell Mail Code SD48 Biotechnology Science Group, NASA Marshall Space Flight Center, Huntsville, Alabama 35812 Received August 24, 2000 ABSTRACT: Macromolecular crystal growth is seen as an ideal experiment to make use of the reduced acceleration environment provided by an orbiting spacecraft. The experiments are small, are simply operated, and have a high potential scientific and economic impact. In this review we examine the theoretical reasons why microgravity is a beneficial environment for crystal growth and survey the history of experiments on the Space Shuttle Orbiter, on unmanned spacecraft, and on the Mir space station. The results of microgravity crystal growth are considerable when one realizes that the comparisons are always between few microgravity-based experiments and a large number of earth-based experiments. Finally, we outline the direction for optimizing the future use of orbiting platforms. 1. Introduction molecules, including viruses, proteins, DNA, RNA, and complexes of those molecules. In this review, the terms Macromolecular crystallography is a multidisciplinary protein or macromolecule are used to refer to this entire science involving the crystallization of a macromolecule range. or complex of macromolecules, followed by X-ray or The reduced acceleration environment of an orbiting neutron diffraction to determine the three-dimensional spacecraft has been posited as an ideal environment for structure. The structure provides a basis for under- biological crystal growth, since buoyancy-driven convec- standing function and enables the development of new tion and sedimentation are greatly reduced. -
CRYSTALLOGRAPHY NEWS BCA Spring Meeting 2004
Contents September 2003 Contents BCA Administrative Office, Northern Networking Ltd, 1 Tennant Avenue, From the President. 2 College Milton South, East Kilbride, Glasgow G74 5NA Council Members . 3 Scotland, UK Tel: + 44 1355 244966 Fax: + 44 1355 249959 From the Editor/Corporate Members . 4 e-mail: [email protected] Communications to the Editor . 5 News and Meetings . 6 NEXT ISSUE OF CRYSTALLOGRAPHY NEWS BCA Spring Meeting 2004 . 8 CRYSTALLOGRAPHY NEWS is Published quarterly (March, June, Book Review/Puzzle . 9 September and December) by the British Crystallographic Association. Submissions on any CCG Ninth Intensive Course in X-ray Structure Analysis . 10 subject related to crystallography are most welcome. If possible, please send text electronically 7th International School on the Crystallography of without special formatting. Biological Macromolecules . 11 Pictures are most welcome, but should be sent as separate, graphic files. Items for inclusion in Diamond - First User Meeting,19 May 2003 in RAL. 14 the December 2003 issue should reach the Editor by 25 October 2003. Crystallisation 2003. 16 BOB GOULD 33 Charterhall Road EDINBURGH EH9 3HS RSC Chemical Landmark: The Braggs at Leeds University, 1912-1915 . 17 Tel: 0131 667 7230 E-mail: [email protected] The 50th Anniversary of the Discovery of the Structure of DNA. 19 The British Crystallographic Association is a Registered Charity (#284718) BCA Spring Meeting 2003: Synchrotron Radiation . 20 As required by the DATA PROTECTION ACT, the BCA is notifying members that we store your contact information on a computer database to simplify our administration. These details are not divulged to any High Throughput, Databases and Data Mining at York . -
Gunther Stent, Generalist, Feted at 80 Chromosome Mystery Solved
Transcript MCB Spring 2005 • Vol. 8, No. 1 Newsletter for Members and Alumni of the Department of Molecular & Cell Biology at the University of California, Berkeley Gunther Stent, Generalist, Chromosome Feted at 80 Mystery Solved Neurologist Oliver Sacks, chemist Manfred Few sights are as awe-inspiring as a cell in Eigen and biologist Sydney Brenner were anaphase. Seen through the microscope, the among the scientific notables who gathered replicated chromosomes, having lined up in Koshland Hall on a sunny April Saturday neatly along the midline of the dividing cell to celebrate the life and work of Professor like a row of tiny X’s, are simultaneously Emeritus Gunther Stent. The rare congress of yanked apart. Each X splits into two sideways luminaries and Nobel-prizewinners from V’s careening in opposite directions, folded diverse fields was intended to represent at the middle like a running back receiving a Stent’s wide-ranging interests and contribu- flying tackle. It all happens in the blink of an tions over the course of his career, which has eye in a space smaller than a speck of dust. lasted more than half a century. The orderly segregation of chromo- Organizers Michael Botchan and David somes is absolutely essential to ensure that Weisblat originally wanted the symposium to Gunther Stent every cell has a complete set of genes. Errors coincide with Stent’s 80th birthday last year, in segregation can sometimes lead to cancer but coordinating the visits of so many top sci- or birth defects. Yet how every cell pulls this entists proved more challenging than expect- influenced by physicist Erwin Schrödinger’s off without a hitch nearly every time is poor- ed, Botchan says. -
How to Make Tubular Crystals by Reconstitution of Detergent-Solubilized Ca2+-Atpase
Biophysical Journal Volume 72 June 1997 2545-2558 2545 How to Make Tubular Crystals by Reconstitution of Detergent-Solubilized Ca2+-ATPase Howard S. Young,* Jean-Louis Rigaud,# Jean-Jacques Lacapere,# Laxma G. Reddy,§ and David L. Stokes* *Skirball Institute of Biomolecular Medicine, New York University Medical Center, New York, New York 10016 USA; #Institut Curie, Section de recherche, UMR-CNRS 168 and LCR-CEA 8, 75231 Paris, France; and §Department of Biochemistry, University of Minnesota, Minneapolis, Minnesota 55455 USA ABSTRACT In an attempt to better define the parameters governing reconstitution and two-dimensional crystallization of membrane proteins, we have studied Ca2+-ATPase from rabbit sarcoplasmic reticulum. This ion pump forms vanadate- induced crystals in its native membrane and has previously been reconstituted at high lipid-to-protein ratios for functional studies. We have characterized the reconstitution of purified Ca2+-ATPase at low lipid-to-protein ratios and discovered procedures that produce long, tubular crystals suitable for helical reconstruction. C12E8 (n-dodecyl-octaethylene-glycol monoether) was used to fully solubilize various mixtures of lipid and purified Ca2+-ATPase, and BioBeads were then used to remove the C12E8. Slow removal resulted in two populations of vesicles, and the proteoliposome population was separated from the liposome population on a sucrose density gradient. These proteoliposomes had a lipid-to-protein ratio of 1:2, and virtually 100% of molecules faced the outside of vesicles, as determined by fluorescein isothiocyanate labeling. Cycles of freeze-thaw caused considerable aggregation of these proteoliposomes, and, if phosphatidyl ethanolamine and phosphatidic acid were included, or if the bilayers were doped with small amounts of C12E8, vanadate-induced tubular crystals grew from the aggregates. -
Ramsay Memorial Fellowships Trust
RAMSAY MEMORIAL FELLOWSHIPS TRUST Annual Report and Financial Statements 1 August 2014 - 31 July 2015 CONTENTS FOREWORD .............................................................................................................................................. 3 REFERENCE AND ADMINISTRATIVE DETAILS...................................................................................... 4 INTRODUCTION ........................................................................................................................................ 5 STRUCTURE, GOVERNANCE & MANAGEMENT .................................................................................... 5 Organisational structure and governance ......................................................................... 5 Management .................................................................................................................... 5 Risk Management ............................................................................................................ 6 OBJECTIVES AND ACTIVITIES................................................................................................................ 6 Objectives ........................................................................................................................ 6 Public Benefit ................................................................................................................... 6 Activities ......................................................................................................................... -
Microed Structure of Lipid-Embedded Mammalian Mitochondrial Voltage-Dependent Anion Channel
MicroED structure of lipid-embedded mammalian mitochondrial voltage-dependent anion channel Michael W. Martynowycza,b, Farha Khanc, Johan Hattnea,b, Jeff Abramsonc, and Tamir Gonena,b,c,1 aHoward Hughes Medical Institute, University of California, Los Angeles, CA 90095; bDepartment of Biological Chemistry, University of California, Los Angeles, CA 90095; and cDepartment of Physiology, University of California, Los Angeles, CA 90095 Edited by Yifan Cheng, University of California, San Francisco, CA, and approved November 8, 2020 (received for review September 24, 2020) A structure of the murine voltage-dependent anion channel (VDAC) making them suitable for analysis by MicroED, but they repre- was determined by microcrystal electron diffraction (MicroED). sent a special case where 3D crystals formed serendipitously Microcrystals of an essential mutant of VDAC grew in a viscous from stacked 2D crystals. Moreover, this crystallization method bicelle suspension, making it unsuitable for conventional X-ray requires large amounts of purified protein, and the crystalliza- crystallography. Thin, plate-like crystals were identified using tion technique is slow and laborious. In sharp contrast, micro- scanning-electron microscopy (SEM). Crystals were milled into thin crystals of NaK were identified in conditions using detergents out lamellae using a focused-ion beam (FIB). MicroED data were col- of a sparse matrix. The crystals formed as small cubes containing lected from three crystal lamellae and merged for completeness. approximately 1,000 diffracting units. These crystals grew out of The refined structure revealed unmodeled densities between pro- a detergent solution, without any lipids; they were easy to pi- tein monomers, indicative of lipids that likely mediate contacts be- pette, and excess solution blotted easily for cryoEM grid prep- tween the proteins in the crystal.