RT @mikaellindstro2: @TorstenAkesson @AgnetaBlomqvist Jo det är koncept som brukar diskuteras med virus... ("selfish genetic elements") Om…
RT @mikaellindstro2: @TorstenAkesson @AgnetaBlomqvist Jo det är koncept som brukar diskuteras med virus... ("selfish genetic elements") Om…
@TorstenAkesson @AgnetaBlomqvist Jo det är koncept som brukar diskuteras med virus... ("selfish genetic elements") Om du vill läsa mer om virusevolution så är denna artikel av Koonin, några år på nacken nu, en tyngre men bra inkörsport. Basal biologikunska
Rileggere il monumentale lavoro sui virus (chi sono e dove vengono) di Koonin, farebbe bene a tanti...:"The ancient Virus World and evolution of cells" https://t.co/Onq1GDB0kD
#UnDatoViral La información genética de virus sugiere que estas entidades biológicas podrían haber evolucionado de forma paralela a la vida (bacterias y demás), incluso ser anteriores a ellos. Antes de la vida, tal vez hubo un "mundo viral" (virus world) h
RT @JaniJaakkola: TIL: Viruses are probably older than Last Universal Common Ancestor of all life. Which seems to impossible, since viruses…
TIL: Viruses are probably older than Last Universal Common Ancestor of all life. Which seems to impossible, since viruses need life to replicate. Not so! Some awesome evolution of biochemistry was going on 4G years ago. https://t.co/GDoKL4FrkD https://t.co
@edrybicki @KamounLab Or a la Koonin, before cells were RNA viruses ;) https://t.co/q7oTdqMS8u
Omnis virus e virus caveat: "viruses do exist that seem to be disconnected form the rest of the virus world." https://t.co/rlLvC2FJrJ
"Omnis virus e virus. Granted, this requires an important caveat." https://t.co/rlLvC2FJrJ
"In the Virus World, all viruses evolve from other viruses, even if via circuitous routes: Omnis virus e virus." https://t.co/rlLvC2FJrJ
"During eukaryogenesis...a second melting pot that gave rise to the realm of eukaryotic viruses." https://t.co/rlLvC2o839
"Eukaryogenesis, one of the most remarkable, turbulent transitions in life's evolution." https://t.co/rlLvC2FJrJ
The common genes of major classes of viruses, "some of which are hallmarks of the Virus World." https://t.co/rlLvC2FJrJ
The major classes of viruses are "connected through overlapping arrays of common genes." https://t.co/rlLvC2FJrJ
"The major classes of viruses do not have a common origin in the traditional sense." https://t.co/rlLvC2FJrJ
The virus world concept blurs "implies a "third path"." https://t.co/rlLvC2FJrJ
"The virus world concept blurs the distinction between monophyletic and polyphyletic origins of virus classes." https://t.co/rlLvC2FJrJ
"A "eukaryotes first" scenario would call for a very different perspective on viral evolution as well." https://t.co/rlLvC2FJrJ
"Models of the virus world evolution depend on the adopted scenario for evolution of cells." https://t.co/rlLvC2FJrJ
"The cataclysmic events of eukaryogenesis appear to have precipitated the birth of a new domain of the virus world." https://t.co/rlLvC2FJrJ
"The importance of the links between viral and cellular evolution and the coherence of the emerging scenarios." https://t.co/rlLvC2FJrJ
Eukaryotic virus genes "in the melting pot of the emergent eukaryotic cell." https://t.co/rlLvC2FJrJ
Eukaryotic virus genes from "the gene pool of prokaryotic viruses." https://t.co/rlLvC2FJrJ
"The birth of the eukaryotic virus realm...a turbulent process of mixing and matching of genes." https://t.co/rlLvC2FJrJ
"The higher prevalence of DNA viruses in prokaryotes contrasted by the preponderance of RNA viruses in eukaryotes." https://t.co/rlLvC2FJrJ
The different genome strategies "are dramatically different between prokaryotic and eukaryotic viruses." https://t.co/rlLvC2FJrJ
"It is impossible to rule out that direct progenitors of the main groups of eukaryotic viruses are lurking." https://t.co/rlLvC2FJrJ
"The available bacteriophage genomes account for but a tiny slice of the enormous phage diversity." https://t.co/rlLvC2FJrJ
Viral genes + eukaryogenesis: "the path between the two domains...involved drastic remolding of the viral genomes." https://t.co/rlLvC2FJrJ
Viral genes and eukaryogenesis: "the path between the two domains was not smooth." https://t.co/rlLvC2FJrJ
"These lines of viral gene evolution form multiple intersections in the melting pot of eukaryogenesis." https://t.co/rlLvC2FJrJ
"The conservation of the hallmark genes across most of the virus world." https://t.co/rlLvC2FJrJ
"The pivotal contribution of prokaryotic viruses to the origin of eukaryotic viral genomes." https://t.co/rlLvC2FJrJ
Bacteriophages "played a much greater role in the origin of eukaryotic viruses than archaeal selfish elements." https://t.co/rlLvC2FJrJ
The mitochondria "contributed many genes from their phage gene pool to the emerging eukaryotic viruses." https://t.co/rlLvC2FJrJ
The eukaryotic melting pot in which "viral and cellular genes molded a new domain of the virus world." https://t.co/rlLvC2FJrJ
The eukaryotic melting pot of virus evolution, with "extensive mixing and matching of viral and cellular genes." https://t.co/rlLvC2FJrJ
After the primordial gene pool, the emerging eukaryotic cell is the 2nd melting pot of viral evolution. https://t.co/rlLvC2FJrJ
Except dsDNA viruses, "all major classes of viruses display greater diversity in eukaryotes than in prokaryotes." https://t.co/rlLvC2FJrJ
"The tight coupling between the earliest stages of viral and cellular evolution." https://t.co/rlLvC2FJrJ
Ancient viruses: "mixing and matching of diverse genetic elements was incomparably more extensive" than now. https://t.co/rlLvC2FJrJ
Viral genes: "commonality is not necessarily limited to clear-cut orthologous relationships between genes." https://t.co/rlLvC2FJrJ
"When applied to viruses, the notion of "common genes" is not a simple one." https://t.co/rlLvC2FJrJ
"Many virus groups simply share no common genes, effectively, ruling out any conventional notion of common origin." https://t.co/rlLvC2FJrJ
"Comparative genomics provides no evidence of a monophyletic origin of all viruses." https://t.co/rlLvC2FJrJ
RNA viruses "so far have not been detected in archaea." https://t.co/rlLvC2FJrJ
RNA viruses "are currently represented by only two compact families in bacteria." https://t.co/rlLvC2FJrJ
"Conversely, RNA viruses are extremely abundant and diverse in plants and animals." https://t.co/rlLvC2FJrJ
(ds) DNA bacteriophage diversity "is in a stark contrast to the absence of bona fide dsDNA viruses in plants." https://t.co/rlLvC2FJrJ
There is "extraordinary diversity of double-stranded (ds) DNA bacteriophages." https://t.co/rlLvC2FJrJ
Viruses "show a non-uniform and non-trivial distribution among the host taxa." https://t.co/rlLvC2FJrJ
"The genomes of the largest known virus...and the smallest viruses...differ by three orders of magnitude." https://t.co/rlLvC2FJrJ
"Viruses with different genome strategies span a vast range of genome sizes." https://t.co/rlLvC2FJrJ
Viral diversity of genetic cycles, "in a sharp contrast to the uniformity of the cellular genetic cycle." https://t.co/rlLvC2FJrJ
"A remarkable feature of viruses is the diversity of their genetic cycles." https://t.co/rlLvC2FJrJ
Viruses: "the total number of virus particles exceeding the number of cells by at least an order of magnitude." https://t.co/rlLvC2FJrJ
"Viruses, primarily, bacteriophages, are "most abundant biological entities on the planet". https://t.co/rlLvC2FJrJ
"It appears that every cellular organism studied has its own viruses or...virus-like selfish genetic elements." https://t.co/rlLvC2FJrJ
"Viruses are ubiquitous companions of cellular life forms." https://t.co/rlLvC2FJrJ
RT @azizrk: @edyong209 @carlzimmer @phylogenomics I believe Eugene Koonin has predicted something on these lines http://t.co/A5cP4zrE
To read RT @azizrk @edyong209 @carlzimmer @phylogenomics I believe Eugene Koonin has predicted something on these lines http://t.co/8QtPqDPe
@edyong209 @carlzimmer @phylogenomics OK, sorry. Let me clarify: in this paper http://t.co/A5cP4zrE , Koonin compares all hypotheses
RT @azizrk: @edyong209 @carlzimmer @phylogenomics I believe Eugene Koonin has predicted something on these lines http://t.co/A5cP4zrE
RT @azizrk: @edyong209 @carlzimmer @phylogenomics I believe Eugene Koonin has predicted something on these lines http://t.co/A5cP4zrE
@edyong209 @carlzimmer @phylogenomics I believe Eugene Koonin has predicted something on these lines http://t.co/A5cP4zrE
Biology Direct | Full text | The ancient Virus World and evolution of cells http://t.co/es14G4RW