By Karl Maramorosch; Edouard Kurstak
Comparative Virology offers an built-in comparability of viruses, in keeping with their chemical and morphological features. those descriptions won't simply supply the reader a heritage but in addition an in depth research of a number of the teams. In a few situations the teams are nonetheless host comparable, as relating to bacteriophages and polyhedral insect viruses. In others, for example in pox viruses, the gang includes viruses of vertebrates and invertebrates. The hosts of the bacilliform Rhabdovirales diversity from guy and different warm-blooded vertebrates via invertebrate animals to vegetation. a unique bankruptcy is dedicated to viruses with out protein-a workforce that's of significant curiosity and that has just recently been well-known. due to the fact there's historic and sensible curiosity in écologie groupings, reminiscent of arboviruses and oncogenic viruses, chapters on such teams have additionally been incorporated.
The booklet opens with a dialogue at the type of viruses. Chapters facing DNA viruses and RNA viruses keep on with, and the ecologically and disease-oriented teams entire the quantity. it's was hoping that ""Comparative Virology"" can help carry harmony to the technology of virology in the course of the comparative process that's not depending on virus-host interactions. The mixed efforts of eminent members to debate and review new details will optimistically profit all who're attracted to virology
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Additional resources for Comparative virology
Finally, let us assume that we are able to reconstruct the phylogeny of a given virus. Mutations have lead to substitution of amino acids, and to antigenic alterations. The question is immediately raised : how many amino acid substitutions will be needed in order to consider that we are dealing with a new species or a new genus? Not only the number of substitutions will have to be taken into account, but also their nature. If a few hundred amino acids belonging to twenty species are involved, one can foresee great battles.
1 962a). Cold Spring Harbor Symp. Quant. Biol. 27, S S . Wildy, P. ( 1 962b). " Cambridge Univ. Press, London. Note Added in Proof: We have learned that densonucleosis virus has a complementary single-stranded DNA, separately encapsidated. 6 x 106 daltons (Kurstak et al. , C. R. Acad. , Paris 272, 762, 1 970), or 2. 2 x 1 06 daltons (Barwise and Walker, FEBS Letters 6, 1 3 , 1 970). cHAPTER 2 Small DNA Viruses M. DA VID HOGGAN I. Introduction . . . . . . . . . . . 43 II. Classification and Nomenclature : General Considerations 44 III.
Note : ( I ) that the classification suggested by this Committee is the LHT system ; (2) that the International Committee does not have to accept or reject the LHT classification ; (3 ) that if it had rejected it, the decision would have been null and void, because it is not competent in matters of taxonomy. It is advisable that virologists wishing to discuss taxonomy and nomen clature should first assimilate a few elementary principles with regard to these disciplines. This would avoid considerable confusion.
Comparative virology by Karl Maramorosch; Edouard Kurstak