Polynucleotide sequence homologies among polioviruses.
نویسندگان
چکیده
منابع مشابه
Polynucleotide sequence relationships among members of Enterobacteriaceae.
Polynucleotide relationships were examined among many representatives of the Enterobacteriaceae by means of agar, membrane filter, and hydroxyapatite procedures. The amount of deoxyribonucleic acid (DNA) that reassociated was dependent, especially in interspecific reactions, on the annealing temperature. In only three cases: Escherichia coli-Shigella flexneri, Salmonella typhimurium-S. typhi, a...
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DNA was isolated from 19 strains and substrains of Streptococcus sanguis and analysed for guanine plus cytosine (GC) contents and base sequence homologies. Three groups could be discerned: group 1 strains had 40-8 to 42-8 mol % GC; group 2, 42-7 to 44-0 mol % GC; group 3, 43-8 to 46-4 mol % GC. DNA homologies between groups 1 and 3 were 40 to 60% at 67 degrees C and 40% at 72 degrees C. The hom...
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Superoxide dismutase from chicken-liver mitochondria (manganese enzyme) and the two dismutases from Escherichia coli (manganese and iron enzymes) were analyzed through 29 cycles of automated Edman degradations. The high degree of homology among the amino-terminal sequences of these three dismutases corroborates their known similarity of structural and functional properties, and serves as furthe...
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influences are negligible, and that the changing environment and the nature of the gene product primarily determine those genes which evolve most rapidly. On the other hand, map position influences on evolutionary rate could be of such great importance that they provide selection pressure for map rearrangement. Because the genome of Bacillus subtilis is replicated in sequential order from one e...
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Most of the genetic studies on streptomycetes have been done with cultures erroneously designated as Streptomyces coelicolor. To determine whether these cultures are genetically homologous with the S. violaceoruber nominifer, their deoxyribonucleic acids (DNA) were analyzed, and selected pairs of mutants were crossed. The four cultures used in genetic studies, and called S. coelicolor in the li...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1968
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.61.2.548