Results: 4

Selective intra-dinucleotide interactions and periodicities of bases separated by K sites: a new vision and tool for phylogeny analyses

Biol. Res; 50 (), 2017
Direct tests of the random or non-random distribution of nucleotides on genomes have been devised to test the hypothesis of neutral, nearly-neutral or selective evolution. These tests are based on the direct base distribution and are independent of the functional (coding or non-coding) or structural (rep...

The structure of selective dinucleotide interactions and periodicities in D melanogaster mtDNA

Biol. Res; 47 (), 2014
BACKGROUND: We found a strong selective 3-sites periodicity of deviations from randomness of the dinucleotide (DN) distribution, where both bases of DN were separated by 1, 2, K sites in prokaryotes and mtDNA. Three main aspects are studied. I) the specific 3 K-sites periodic structure of the 16 DN. II) ...

DNA sequence variation of drought-response candidate genes in Austrocedrus chilensis

Electron. j. biotechnol; 16 (2), 2013
Background: Austrocedrus chilensis (D. Don) Pic. Ser. et Bizzarri commonly known as Patagonian cypress is a member of the Cupressaceae family, characterized by a high adaptive potential for growing in marginal areas and good timber quality. The species grows over a wide area and under a wide range of rai...

Identificação de RNAs longos não-codificadores de proteínas regulados por micro-RNAs

Estudos recentes têm revelado que a maior parte dos transcritos gerados em células humanas é composta por RNAs não-codificadores de proteínas (ncRNAs). Uma parte desses ncRNAs compreende a classe de RNAs curtos, que possuem menos que 200 nucleotídeos. Os micro-RNAs (miRNAs) fazem parte dessa classe...