FACTOID # 13: New York has America's lowest percentage of residents who are veterans.
 
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 
   
 
WHAT'S NEW
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Christian de Duve
Jump to: navigation, search

Christian de Duve (born October 2, 1917) is a biochemist. de Duve was born in Thames-Ditton, Britain, as a son of Belgian emigrants. They returned to Belgium in 1920. De Duve studied at the Catholic University of Leuven, where he became professor in 1947. He specialized in subcellular biochemistry and cell biology and discovered the peroxisomes, a cell organelle. October 2 is the 275th day (276th in leap years) of the year in the Gregorian Calendar, with 90 days remaining. ... Jump to: navigation, search 1917 was a common year starting on Monday of the Gregorian calendar (see link for calendar) or a common year starting on Tuesday of the Julian calendar. ... Biochemistry is the chemistry of life. ... Jump to: navigation, search 1920 is a leap year starting on Thursday (link will take you to calendar) // Events January January 7 - Forces of Russian White admiral Kolchak surrender in Krasnoyarsk. ... Jump to: navigation, search // Location The Gothic Leuven Town Hall Leuven listen [â–¶](audio help) is the capital town of the Belgian province of Flemish Brabant. ... Jump to: navigation, search A professor (Latin: one who claims publicly to be an expert) (prof for short) is a senior teacher, lecturer and researcher, usually in a college or university. ... Jump to: navigation, search 1947 was a common year starting on Wednesday (link will take you to calendar). ... Biochemistry is the chemistry of life, a bridge between biology and chemistry that studies how complex chemical reactions give rise to life. ... Cell biology (also called cellular biology or cytology, from the Greek kytos, container) is an academic discipline which studies cells. ... Peroxisomes are ubiquitous organelles in eukaryotes. ... Jump to: navigation, search Cells in culture, stained for keratin (red) and DNA (green) The cell is the structural and functional unit of all living organisms, sometimes called the building blocks of life. ... Jump to: navigation, search Schematic of typical animal cell, showing subcellular components. ...


Amongst other subjects, de Duve studied the distribution of enzymes in rat liver cells using rate-zonal centrifugation. De Duve's work on cell fractionation provided an insight into the function of cell structures. Neuraminidase ribbon diagram An enzyme (in Greek en = in and zyme = blend) is a protein, or protein complex, that catalyzes a chemical reaction and also controls the 3D orientation of the catalyzed substrates. ... Jump to: navigation, search Species 50 species; see text *Several subfamilies of Muroids include animals called rats. ... Jump to: navigation, search The liver is an organ in vertebrates, including humans. ... Jump to: navigation, search A cell is a single unit or compartment, enclosed by a border or wall. ... Cell fractionation is the separation of homogeneous sets from a heterogeneous population of cells Steps Disruption of cells and liberation of organelles. ...


De Duve was awarded the shared Nobel Prize for Physiology or Medicine in 1974, together with Albert Claude and George E. Palade, for describing the structure and function of organelles in biological cells. His later years have been mostly devoted to origin of life studies, which he admits is still a speculative field (see thioester). List of Nobel Prize laureates in Physiology or Medicine from 1901 to the present day. ... Jump to: navigation, search 1974 is a common year starting on Tuesday (click on link for calendar). ... Jump to: navigation, search Albert Claude (August 24, 1899 – May 22, 1983) was a Belgian biologist who won the Nobel Prize in Physiology or Medicine in 1974. ... Dr. Palade won the Nobel Prize in 1974. ... Jump to: navigation, search Schematic of typical animal cell, showing subcellular components. ... Jump to: navigation, search Cells in culture, stained for keratin (red) and DNA (green) The cell is the structural and functional unit of all living organisms, sometimes called the building blocks of life. ... Jump to: navigation, search Pre-Cambrian stromatolites in the Siyeh Formation, Glacier National Park. ... Thioesters are compounds resulting from the bonding of sulfur with an acyl group (an alkyl group attached to a carbon-oxygen double bond), with the general formula R-S-CO-R. Some biochemists believe that the thioester bond was critical for the origin of life. ...


His work has contributed to the emerging consensus that the endosymbiotic theory is correct; this idea proposes that Mitochondrion, chloroplasts, and perhaps other organelles of eukaryotic cells originated as Prokaryote endosymbionts, which came to live inside eukaryotic cells. Jump to: navigation, search The endosymbiotic theory concerns the origins of mitochondria and chloroplasts, which are organelles of eukaryotic cells. ... In cell biology, a mitochondrion is an organelle found in the cells of most eukaryotes. ... Jump to: navigation, search The inside of a chloroplast Chloroplasts are organelles found in plant cells and eukaryotic algae which conduct photosynthesis. ... Jump to: navigation, search Schematic of typical animal cell, showing subcellular components. ... Prokaryotes are unicellular (in rare cases, multicellular) organisms without a nucleus. ... Jump to: navigation, search An endosymbiont is any organism that lives within the body or cells of another organism, i. ...


De Duve proposes that peroxisomes may have been the first endosymbionts, which allowed cells to withstand the growing amounts of free molecular oxygen in the Earth's atmosphere. Since peroxisomes have no DNA of their own, this proposal has much less evidence than the similar claims for mitochondria and chloroplasts. Peroxisomes are ubiquitous organelles in eukaryotes. ... Jump to: navigation, search Space-filling model of a section of DNA molecule Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions specifying the biological development of all cellular forms of life (and many viruses). ... In cell biology, a mitochondrion is an organelle found in the cells of most eukaryotes. ... Chloroplasts are organelles found in plant cells and eukaryotic algae which conduct photosynthesis. ...


Bibliography

  • A Guided Tour of the Living Cell (1984) ISBN 0716750023
  • Blueprint For a Cell: The Nature and Origin of Life (1991) ISBN 0892784105
  • Vital Dust: Life As a Cosmic Imperative (1996) ISBN 0465090451
  • Life Evolving: Molecules, Mind, and Meaning (2002) ISBN 0195156056
  • That I would embrace such a career was, however, very far from my mind

  Results from FactBites:
 
Christian de Duve - Wikipedia, the free encyclopedia (303 words)
de Duve was born in Thames-Ditton, Britain, as a son of Belgian emigrants.
De Duve was awarded the shared Nobel Prize for Physiology or Medicine in 1974, together with Albert Claude and George E. Palade, for describing the structure and function of organelles in biological cells.
De Duve proposes that peroxisomes may have been the first endosymbionts, which allowed cells to withstand the growing amounts of free molecular oxygen in the Earth's atmosphere.
Christian de Duve - Wikipedia (381 words)
Hij was er van overtuigd dat de oplossing lag in de biochemie, en besloot ook een graad in de scheikunde te halen.
Verder onderzoek leidde tot de identificatie van een nieuw celorganel dat in 1955 de naam lysosoom kreeg.
De laatste wijziging op deze pagina vond plaats op 31 aug 2005 18:24.
  More results at FactBites »

 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m