The molecular biology of picornaviruses perez bercoff r. R Pérez Bercoff's research works 2019-01-28

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In vitro translation of mengovirus RNA deprived of the terminally‐linked (capping?) protein

the molecular biology of picornaviruses perez bercoff r

Viral Replication and Cell Death. Unifying Hypothesis Relating Viral and Nonviral Factors in Hepatic Oncogenesis. The Regulation of Alpha Genes: A Microcosm of the General Pattern of Viral Gene Regulation. The Direct Approach: Protein Primers. Electronmicroscopy, ultracentrifugation and tissue culture were the landmarks on the way of the young science.

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Primary structure, gene organization and polypeptide expression of poliovirus RNA

the molecular biology of picornaviruses perez bercoff r

Proteolytic Processing in Various Virus Families. A particular case of overlapping genes are the so-called hidden genes, hidden frames or mini-cistrons found in the poliovirus Pierangeli et al. This pattern of mutation appeared to be a feature common to all neurovirulent variants of poliovirus type 2. Klug, Nature London 183, 1709—1714, 1959; J. Generation of Defective Interfering Particles. Vitolo, the Chairman of its Tourist Office: their enthusiastic support greatly contributed to make of our time in their wonderful seaside resort an unforgettable one. In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

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Primary structure, gene organization and polypeptide expression of poliovirus RNA

the molecular biology of picornaviruses perez bercoff r

Protein Binding Sites in Alpha Promoter-regulatory Domains. The present paper contains evidence that cathepsin R in rat liver ribosomes is present in a cryptic form. Most of the recombinant strains described previously were isolated from experimental infection in cell culture under an artificial selective pressure. How an Ambisense Genome May Arise?. Modified Circular Replication: Rolling Circles and Concatamer Formation. Additionally, the results provide clear evidence of the Red Queen dynamics of evolution since the virus has very much evolved to re-adapt its codon usage to the environmental cellular changing conditions in order to recover the original fitness. In addition, the 2A protein can strongly inhibit human growth hormone the translation of which is entirely cap-dependent via an unknown mechanism Maltese et al.

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Role of the pyrimidine

the molecular biology of picornaviruses perez bercoff r

The Products of the Early Region. The crossover points in all the 5 genomes have been mapped to different loci of the P3 region. Viruses that Use Reverse Transcriptase. The primary structure of the poliovirus genome has been determined. Host Factors in Virus Expression. Crystals of Mengo virions have been grown reproducibly and analyzed by X-ray diffraction. The Interferon-induced Protein Kinase Pathway.

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The Molecular Basis of Viral Replication : R. Perez

the molecular biology of picornaviruses perez bercoff r

The result was a stimulating atmosphere, conducive to authentic scientific exchanges. The enzyme has been given the name cathepsin R, following the recommendations of Barrett et al. Expression of the Viral Genome. Hence, the success of this meeting should be credited only to them. Possible Role of Chemical Carcinogens. Substitutions in these hexanucleotides abrogated internal initiation of translation, whereas similar changes in the neighbouring domains nt 107-112 and 120-126 had no effect on the expression of the reporter gene, suggesting that the 5'-most pyrimidine-rich tract is indeed part of the structure s recognized by ribosomes and associated factors at initiation of translation and that the hexanucleotides 100-106 and 113-119 constitute an important part of it. Similarities between Hepadna Viruses and Retroviruses in Genome Organization and Replication Mechanisms.

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The Molecular Biology of Picornaviruses

the molecular biology of picornaviruses perez bercoff r

The mini cistron 157-192 is conserved in position, length and sequence in the genome of all types and strains of poliovirus. Thus, the slow translation rate, resulting from the accumulation of rare codons, is likely to contribute to the highly stable viral capsid necessary for a prolonged survival outside the host body. Unfortunately, more often than not, it proved impossible to identify them in the records. Ribosomes have been shown to contain a proteolytic activity, characterized as an endopeptidase with serine in the active center. Latency: an Interaction of Herpesviruses with Their Hosts. Electronmicroscopy, ultracentrifugation and tissue culture were the landmarks on the way of the young science. The Herpes Virion and its Components.

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The Molecular Biology of Picornaviruses

the molecular biology of picornaviruses perez bercoff r

However, in apparent contradiction with this fact, various alterations in these elements were reported to be lethal 52,119,121,136,341, 511,512. All proved to be intertypic recombinants having the genes encoding capsid proteins of Sabin 2 origin and a 3'-end portion of the genome derived from either type 1 3 isolates or type 3 2 isolates Sabin strains. Induction of Alpha Gene Expression by a Virion Structural Component. Effect of Interferon on Influenza Virus Replication. Architecture, Composition, and Requirements for Infection.

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Primary structure, gene organization and polypeptide expression of poliovirus RNA

the molecular biology of picornaviruses perez bercoff r

Arrest of elongation independent of termination codons. The Early Events in Viral Gene Expression. Internal in-phase initiation within a gene. The General Pattern of Gene Expression. Requirements for the Expression of Foreign Genes. Shellfish-borne outbreaks are still of major concern causing hundreds of cases and huge economical losses in the present context of global food trade. Finally, on behalf of all participants, I would like to thank Professor Sissini, the Mayor of Maratea, and Mr.

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