Results 271 to 280 of about 3,988,806 (312)
Some of the next articles are maybe not open access.
1957
Publisher Summary A virus may have oscillated in the course of evolution, between being an independent parasite and a cell constituent. It is wrong to think of the evolution of methods of transmission as proceeding always in one direction. Bacteria infecting insects by the horizontal route could have evolved into symbionts, transmitted vertically ...
openaire +2 more sources
Publisher Summary A virus may have oscillated in the course of evolution, between being an independent parasite and a cell constituent. It is wrong to think of the evolution of methods of transmission as proceeding always in one direction. Bacteria infecting insects by the horizontal route could have evolved into symbionts, transmitted vertically ...
openaire +2 more sources
Virus-assisted directed evolution of biomolecules
Current Opinion in Chemical Biology, 2023Directed evolution is a powerful technique that uses principles of natural evolution to enable the development of biomolecules with novel functions. However, the slow pace of natural evolution does not support the demand for rapidly generating new biomolecular functions in the laboratory.
Delilah Jewel +2 more
openaire +2 more sources
Current Opinion in Microbiology, 2003
RNA viruses are the most common viruses of plants, and the evolution of these viruses has been studied both experimentally and phylogenetically. The basic molecular mechanisms for plant virus evolution are similar to those of other viruses, with some notable exceptions. Recent advances include new insights into the origins of plant viruses, analyses of
openaire +2 more sources
RNA viruses are the most common viruses of plants, and the evolution of these viruses has been studied both experimentally and phylogenetically. The basic molecular mechanisms for plant virus evolution are similar to those of other viruses, with some notable exceptions. Recent advances include new insights into the origins of plant viruses, analyses of
openaire +2 more sources
The evolution of giant virus genomes
Science, 2017Viral Genomics Some giant viruses encode a genome larger than that of some bacteria, but their evolutionary history is a mystery. Examining the genomes within a sample from a wastewater treatment plant in Austria, Schulz et al. assembled a previously undiscovered giant virus genome, which they used to mine genetic databases for related viruses.
openaire +2 more sources
The Variety of Human Virus Evolution
Molecular Phylogenetics and Evolution, 1996There have been many wise suggestions of ways that evolution may occur but those ways seem often hard to support with good examples. Viruses have proven to be replete with some of these items. This paper reviews work that shows: (1) very fast rates of evolution; (2) positive Darwinian selection with the selective pressure specifically identified; (3 ...
openaire +2 more sources
Evolution of infectious salmon anaemia virus (ISA virus)
Archives of Virology, 2012Infectious salmon anaemia virus, ISA virus (genus Isavirus, family Orthomyxoviridae), emerged in Norwegian salmon culture in the mid-80s. The genome consists of eight segments coding for at least 10 proteins. ISA viruses show many of similarities to influenza A viruses but differ in many important aspects such as the number of hosts, the host ...
Heidrun, Plarre +5 more
openaire +2 more sources
Persistent infection with influenza A virus: Evolution of virus mutants
Virology, 1984A persistent infection (persistent infection I) of baby hamster kidney (BHK) cells with the WSN (H1N1) strain of influenza A virus was established using a virus stock which contained a high proportion of defective-interfering (DI) particles. Virus recovered from passage 92 (388 days) of persistent infection I was used to establish a second persistent ...
D W, Frielle, D D, Huang, J S, Youngner
openaire +2 more sources
Nederlands tijdschrift voor geneeskunde, 2010
Viruses have long been held to be derailed cellular elements with a parasitic replication cycle: since without a cell there is no virus. However, the explosion in recently acquired molecular data from genome and protein sequences leads to a completely different view: viruses contain sequences which are unique in the biosphere, which is difficult to ...
openaire +1 more source
Viruses have long been held to be derailed cellular elements with a parasitic replication cycle: since without a cell there is no virus. However, the explosion in recently acquired molecular data from genome and protein sequences leads to a completely different view: viruses contain sequences which are unique in the biosphere, which is difficult to ...
openaire +1 more source
Virus Evolution and the Beginning
Zeitschrift für anorganische und allgemeine Chemie, 2009AbstractWe assume the pentagonal viruses are relatively late and search for models of an earlier evolution. A possible start from the beginning billions of years ago would be cubic mathematics describing hypothetical virus structures. The proposed shift from cubic to pentagonal symmetry is unique and methods from inorganic solid‐state chemistry are ...
openaire +1 more source
Hepatitis B virus: origin and evolution
Journal of Viral Hepatitis, 2010The pathogenesis of hepatitis B virus (HBV) is complex and it appears that molecular variants play a role in this process. HBV undergoes numerous rounds of error prone production within an infected host. The resulting quasispecies are heterogeneous and in the absence of archaeological records of past infection, the evolution of HBV can only be inferred
S M, Jazayeri, S M, Alavian, W F, Carman
openaire +2 more sources