منابع مشابه
Human Pathogenic Viruses in the Marine Environment
Indigenous marine virus strains outnumber any form of life in the sea, usually occurring in billion amounts per liter (Danovaro et al., 2001; Fuhrman, 1999). However, although transspecific propagation of viruses may take place, the virus–host relationship tends to be quite constrained, and consequently human viruses are the only viral agents of public health concern in the marine environment. ...
متن کاملAntibacterial Activity of Marine Sponge Extracts against Fish Pathogenic Bacteria
Secondary metabolites of the marine sponges Acanthella elongata, Axinella donnani, Callyspongia diffusa, Callyspongia subarmigera, and Echinodictyum gorgonoides were collected from fishing nets and their in vitro antibacterial properties against eight virulent marine fish pathogens were studied at incubation temperatures of 20°C and 30°C. Crude methanol extracts of the tested sponges showed spe...
متن کاملVarieties of charge distributions in coat proteins of ssRNA+ viruses.
A major part of the interactions involved in the assembly and stability of icosahedral, positive-sense single-stranded RNA (ssRNA+) viruses is electrostatic in nature, as can be inferred from the strong pH- and salt-dependence of their assembly phase diagrams. Electrostatic interactions do not act only between the capsid coat proteins (CPs), but just as often provide a significant contribution ...
متن کاملSynonymous mutations reduce genome compactness in icosahedral ssRNA viruses.
Recent studies have shown that single-stranded (ss) viral RNAs fold into more compact structures than random RNA sequences with similar chemical composition and identical length. Based on this comparison, it has been suggested that wild-type viral RNA may have evolved to be atypically compact so as to aid its encapsidation and assist the viral assembly process. To further explore the compactnes...
متن کاملDid God make pathogenic viruses?
The structure, function, and role of viruses in ecology is reviewed. It is concluded that viruses are non-living entities, similar to seeds and spores whose functions include carrying genes from one plant or animal to another. Viruses are a part of a system that helps to produce the variety that is critical for life and, importantly, they carry resistance to disease from one organism to another...
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ژورنال
عنوان ژورنال: Uirusu
سال: 1996
ISSN: 0042-6857,1884-3433
DOI: 10.2222/jsv.46.67