The relationship of DNA base composition and individual protein composition in micro-organisms

1973 ◽  
Vol 2 (4) ◽  
pp. 263-276 ◽  
Author(s):  
R. A. Elton
Keyword(s):  
Base Composition ◽  
Protein Composition ◽  
Dna Base Composition ◽  
Individual Protein ◽  
Dna Base ◽  
Micro Organisms ◽  
Relationship Of ◽  
The Relationship

scholarly journals Lifestyle and DNA base composition in polychaetes

2016 ◽  
Vol 48 (12) ◽  
pp. 883-888
Author(s):  
Andrea Tarallo ◽  
Maria Cristina Gambi ◽  
Giuseppe D'Onofrio
Keyword(s):  
Metabolic Rate ◽  
Base Composition ◽  
Gc Content ◽  
Active Lifestyle ◽  
Dna Base Composition ◽  
Polychaete Species ◽  
Dna Base ◽  
Biased Gene Conversion ◽  
Relationship Of ◽  
Genomic Gc Content

A comparative analysis of polychaete species, classified as motile and low-motile forms, highlighted that the former were characterized not only by a higher metabolic rate (MR), but also by a higher genomic GC content. The fluctuation of both variables was not affected by the phylogenetic relationship of the species. Thus, present results further support that a very active lifestyle affects MR and GC at the same time, showing an unexpected similarity between invertebrates and vertebrates. In teleosts, indeed, a similar pattern has been also observed in comparisons of migratory and nonmigratory species. A cause-effect link between MR and GC has not yet been proved, but the fact that the two variables are significantly linked in all the organisms so far analyzed is, most probably, of relevant biological and evolutionary meaning. The present results fit very well within the frame of the metabolic rate hypothesis proposed to explain the DNA base composition variability among organisms. On the contrary, the thermostability hypothesis was not supported. At present, no data about the recombination rate in polychaetes were available to test the biased gene conversion (BGC hypothesis).

DNA BASE COMPOSITION OF CYTOPHAGA MARINOFLAVA N. SP. DETERMINED BY BUOYANT DENSITY MEASUREMENTS IN CESIUM CHLORIDE

1966 ◽  
Vol 12 (6) ◽  
pp. 1099-1103 ◽  
Author(s):  
R. R. Colwell ◽  
R. V. Citarella ◽  
P. K. Chen
Keyword(s):  
Nucleic Acid ◽  
Base Composition ◽  
Marine Bacterium ◽  
Deoxyribonucleic Acid ◽  
Buoyant Density ◽  
Cesium Chloride ◽  
Dna Base Composition ◽  
Density Measurements ◽  
Dna Base ◽  
Relationship Of

A marine bacterium, NCMB 397, host strain for bacteriophages NCMB 384 and 385, has been subjected to taxonoinic analysis. Overall base composition of the highly purified deoxyribonucleic acid was determined and found to be 37 moles % guanine + cytosine. The phenetic and nucleic acid data suggest significant relationship of this strain and members of the genus Cytophaga. A description of Cytophaga marinoflava n. sp. is presented.

Mutants with altered DNA base composition inBacterium paracoli — the evidence from a marker

1971 ◽  
Vol 11 (2) ◽  
pp. 91-95 ◽  
Author(s):  
G. F. Gause ◽  
A. V. Laiko ◽  
M. V. Bibikova ◽  
L. I. Kusovkova ◽  
T. I. Selesneva ◽  
...  
Keyword(s):  
Base Composition ◽  
Dna Base Composition ◽  
Dna Base

William Bateson, Richard Goldschmidt, and Non-Genic Modes of Speciation

2003 ◽  
Vol 11 (04) ◽  
pp. 341-350 ◽  
Author(s):  
D. R. Forsdyke
Keyword(s):  
New Species ◽  
Base Composition ◽  
Hybrid Sterility ◽  
Parental Factors ◽  
Dna Base Composition ◽  
William Bateson ◽  
Dna Base ◽  
Negative Effect ◽  
Positive Effect ◽  
Richard Goldschmidt

Sometimes a cross between two individuals that appear to belong to the same species produces a sterile offspring (i.e., their hybrid is sterile). Thus, the two individuals appear reproductively isolated from each other. If each could find a compatible mate, then new species might emerge. At issue is whether the form of hybrid sterility that precedes sympatric differentiation into species is, in the general case, of genic or non-genic origin. Several recent papers lend the authority of William Bateson to the genic hypothesis, referring to the "Bateson–Dobzhansky–Muller hypothesis". All these papers cite a 1996 paper that, in turn, cites a 1909 paper of Bateson. However, from 1902 until 1926 the latter espoused a non-genic hypothesis that today would be classified as "chromosomal". Analysis of Bateson's 1909 text reveals no recantation. Bateson's non-genic view was similar to that advanced by Richard Goldschmidt in the 1940s. However, Bateson proposed a contribution from parents of abstract factors that, together in their hybrids, complement to bring about a negative effect (hybrid sterility). In contrast, Goldschmidt proposed that normally parents contribute complementary factors making parental chromosomes compatible at meiosis in their hybrids, which hence are fertile (i.e., the parental factors work together to produce a positive effect). When the factors are not sufficiently complementary the parental chromosomes are incompatible in their hybrids, which hence are sterile. The non-genic Batesonian–Goldschmidtian abstractions are now being fleshed-out chemically in terms of DNA base-composition differences.

scholarly journals Cell wall, DNA base composition and lipid studies onListeria denitrificans(Prevot)

1983 ◽  
Vol 18 (1-2) ◽  
pp. 131-134 ◽  
Author(s):  
Matthew David Collins ◽  
Sara Feresu ◽  
Dorothy Jones
Keyword(s):  
Cell Wall ◽  
Base Composition ◽  
Dna Base Composition ◽  
Dna Base
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