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GENTAUR Europe BVBA Voortstraat 49, 1910 Kampenhout BELGIUM Tel 0032 16 58 90 45 Fax 0032 16 50 90 45 This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it. |
GENTAUR BULGARIA
53 Iskar Str. 1191 Kokalyane, Sofia
Tel 0035924682280
Fax 0035929830072
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GENTAUR France SARL
9, rue Lagrange, 75005 Paris
Tel 01 43 25 01 50
Fax 01 43 25 01 60
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GmbH Marienbongard 20
52062 Aachen Deutschland
Tel (+49) 0241 56 00 99 68
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GENTAUR Ltd.
Howard Frank Turnberry House
1404-1410 High Road
Whetstone London N20 9BH
Tel 020 3393 8531
Fax 020 8445 9411
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GENTAUR Poland Sp. z o.o.
ul. Grunwaldzka 88/A m.2
81-771 Sopot, Poland
Tel 058 710 33 44
Fax 058 710 33 48
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GENTAUR Nederland BV
Kuiper 1
5521 DG Eersel Nederland
Tel 0208-080893
Fax 0497-517897
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GENTAUR SRL IVA IT03841300167
Piazza Giacomo Matteotti, 6, 24122 Bergamo
Tel 02 36 00 65 93
Fax 02 36 00 65 94
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GENTAUR Spain
Tel 0911876558
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Genprice Inc, Logistics
547, Yurok Circle
San Jose, CA 95123
Phone/Fax:
(408) 780-0908
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GENPRICE Inc. invoicing/ accounting:
6017 Snell Ave, Suite 357
San Jose, CA. 96123
Serbia, Macedonia,
Montenegro, Croatia:
Tel 0035929830070
Fax 0035929830072
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GENTAUR Romania
Tel 0035929830070
Fax 0035929830072
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GENTAUR Greece
Tel 00302111768494
Fax 0032 16 50 90 45
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Luxembourg +35220880274
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Pandoravirus: Missing Link Discovered Between Viruses and Cells
With the discovery of Mimivirus ten years ago and, more recently, Megavirus chilensis, researchers thought they had reached the farthest corners of the viral world in terms of size and genetic complexity. With a diameter in the region of a micrometer and a genome incorporating more than 1,100 genes, these giant viruses, which infect amoebas of the Acanthamoeba genus, had already largely encroached on areas previously thought to be the exclusive domain of bacteria. For the sake of comparison, common viruses such as the influenza or AIDS viruses only contain around ten genes each.
In the article published in Science, the researchers announced they had discovered two new giant viruses:
- - Pandoravirus salinus, on the coast of Chile;
- - Pandoravirus dulcis, in a freshwater pond in Melbourne, Australia.
Detailed analysis has shown that these first two Pandoraviruses have virtually nothing in common with previously characterized giant viruses. What's more, only a very small percentage (6%) of proteins encoded byPandoravirus salinus are similar to those already identified in other viruses or cellular organisms. With a genome of this size,Pandoravirus salinus has just demonstrated that viruses can be more complex than some eukaryotic cells. Another unusual feature of Pandoraviruses is that they have no gene allowing them to build a protein like the capsid protein, which is the basic building block of traditional viruses.
Despite all these novel properties, Pandoraviruses display the essential characteristics of other viruses in that they contain no ribosome, produce no energy and do not divide.
This groundbreaking research included an analysis of thePandoravirus salinus proteome, which proved that the proteins making it up are consistent with those predicted by the virus' genome sequence. Pandoraviruses thus use the universal genetic code shared by all living organisms on the planet.
This shows just how much more there is to learn regarding microscopic biodiversity as soon as new environments are considered. The simultaneous discovery of two specimens of this new virus family in sediments located 15,000 km apart indicates that Pandoraviruses, which were completely unknown until now, are very likely not rare.
It definitively bridges the gap between viruses and cells -- a gap that was proclaimed as dogma at the very outset of modern virology back in the 1950s.
It also suggests that cell life could have emerged with a far greater variety of pre-cellular forms than those conventionally considered, as the new giant virus has almost no equivalent among the three recognized domains of cellular life, namely eukaryota (or eukaryotes), eubacteria, and archaea.