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Tandemly repeated trinucleotides - comparative analysis

100%

Piwowar M., Meus J., Piwowar P., Wiśniowski Z., Stefaniak J., Roterman I.

2006

vol. 53

issue 2

279-287

Characteristics of 64 possible tandem trinucleotide repeats (TSSR) from Homo sapiens (hs), Mus musculus (mm) and Rattus norvegicus (rn) genomes are presented. Comparative analysis of TSSR frequency depending on their repetitiveness and similarity of the TSSR length distributions is shown. Comparative analysis of TSSR sequence motifs and association between type of motif and its length (n) using ρ-coefficient method (quantitatively measuring the association between variables in contingency tables) is presented. These analyses were carried out in the context of neurodegenerative diseases based on trinucleotide tandems. The length of these tandems and their relation to other TSSR is estimated. It was found that the higher repetitiveness (n) the lower frequency of trinucleotides tandems. Differences between genomes under consideration, especially in longer than n=9 TSSR were discussed. A significantly higher frequency off A- and T-rich tandems is observed in the human genome (as well as in human mRNA). This observation also applies to mm and rn, although lower abundant in proportion to human genomes was found. The origin of elongation (or shortening) of TSSR seems to be neither frequency nor length dependent. The results of TSSR analysis presented in this work suggest that neurodegenerative disease-related microsatellites do not differ versus the other except the lower frequency versus the other TSSR. CAG occurs with relatively high frequency in human mRNA, although there are other TSSR with higher frequency that do not cause comparable disease disorders. It suggests that the mechanism of TSSR instability is not the only origin of neurodegenerative diseases.

Somaclonal variation during Picea abies and P. omorika somatic embryogenesisand cryopreservation

88%

Hazubska-Przybył T., Dering M.

Acta Biologica Cracoviensia s. Botanica

2017

vol. 59

issue 1

Using Morphological Characters and Simple Sequence Repeat (SSR) Markers to Characterize Tunisian Fig (Ficus Carica L.) Cultivars

75%

Saddoud O., Baraket G., Chatti K., Trifi M., Marrakchi M., Mars M., Salhi-Hannachi A.

Acta Biologica Cracoviensia s. Botanica

2011

vol. 53

issue 2

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2 Acta Biologica Cracoviensia s. Botanica

1 Acta Biochimica Polonica

1 2017

1 2011

1 2006

1 Baraket G.

1 Chatti K.

1 Dering M.

1 Hazubska-Przybył T.

1 Marrakchi M.

1 Mars M.

1 Meus J.

1 Piwowar M.

1 Piwowar P.

1 Roterman I.

1 Saddoud O.

1 Salhi-Hannachi A.

1 Stefaniak J.

1 Trifi M.

1 Wiśniowski Z.

Search results

Tandemly repeated trinucleotides - comparative analysis

Somaclonal variation during Picea abies and P. omorika somatic embryogenesisand cryopreservation

Using Morphological Characters and Simple Sequence Repeat (SSR) Markers to Characterize Tunisian Fig (Ficus Carica L.) Cultivars