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Artículo
Changes of ploidy during the Azotobacter vinelandii growth cycle
(American Society for Microbiology, 1994)
The size of the Azotobacter vinelandii chromosome is ~4,700 kb, as calculated by pulsed-field electrophoretic separation of fragments digested with the rarely cutting endonucleases SpeI and SwaI. Surveys of DNA content per ...
Artículo
Suppression of the pleiotropic effects of HisH and HisF overproduction identifies four novel loci on the Salmonella typhimurium chromosome: osmH, sfiW, sfiX, and sfiY
(American Society for Microbiology, 1995)
Insertion mutations that suppress some or all the pleiotropic effects of HisH and HisF overproduction were obtained by using transposons Tn10dTet and Tn10dCam. All suppressor mutations proved to be recessive, indicating ...
Artículo
The presence of glutamate dehydrogenase is a selective advantage for the cyanobacterium Synechocystis sp. strain PCC 6803 under nonexponential growth conditions
(American Society for Microbiology, 1999)
he unicellular cyanobacterium Synechocystis sp. strain PCC 6803 has two putative pathways for ammonium assimilation: the glutamine synthetase- glutamate synthase cycle, which is the main one and is finely regulated by the ...
Artículo
Chloroplast genes transferred to the nuclear plant genome have adjusted to nuclear base composition and codon usage
(Oxford University Press, 1990)
During plant evolution, some plastid genes have been moved to the nuclear genome. These transferred genes are now correctly expressed in the nucleus, their products being transported into the chloroplast. We compared the ...
Artículo
A Reanalysis of the Ancient Mitochondrial DNA Sequences Recovered from Neandertal Bones
(Society for Molecular Biology and Evolution, 2002)
Recent reports analyzing mitochondrial DNA sequences from Neandertal bones have claimed that Neandertals and modern humans are different species. The phylogenetic analyses carried out in these articles did not take into ...
Artículo
Variation in G+C-content and codon choice: Differences among synonymous codon groups in vertebrate genes
(Oxford University Press, 1989)
The relationship between G+C-content and codon usage in genes of human, mus, rat, bovine and chicken nuclear genomes was investigated. Correlation and lineal regression analyses were carried out on plots that related the ...
Artículo
Repression of IS200 transposase synthesis by RNA secondary structures
(Oxford University Press, 1999)
The IS200 transposase, a 16 kDa polypeptide encoded by the single open reading frame (ORF) of the insertion element, has been identified using an expression system based on T7 RNA polymerase. In wild-type IS200, two sets ...