Analysis on frequency and density of microsatellites in coding sequences of several eukaryotic genomes / 基因组蛋白质组与生物信息学报·英文版
Genomics, Proteomics & Bioinformatics
;
(4): 24-31, 2004.
Artigo
em Inglês
| WPRIM
| ID: wpr-339498
ABSTRACT
Microsatellites or simple sequence repeats (SSRs) have been found in most organisms during the last decade. Since large-scale sequences are being generated, especially those that can be used to search for microsatellites, the development of these markers is getting more convenient. Keeping SSRs in viewing the importance of the application, available CDS (coding sequences) or ESTs (expressed sequence tags) of some eukaryotic species were used to study the frequency and density of various types of microsatellites. On the basis of surveying CDS or EST sequences amounting to 66.6 Mb in silkworm, 37.2 Mb in fly, 20.8 Mb in mosquito, 60.0 Mb in mouse, 34.9 Mb in zebrafish and 33.5 Mb in Caenorhabditis elegans, the frequency of SSRs was 1/1.00 Kb in silkworm, 1/0.77 Kb in fly, 1/1.03 Kb in mosquito, 1/1.21 Kb in mouse, 1/1.25 Kb in zebrafish and 1/1.38 Kb in C. elegans. The overall average SSR frequency of these species is 1/1.07 Kb. Hexanucleotide repeats (64.5%-76.6%) are the most abundant class of SSR in the investigated species, followed by trimeric, dimeric, tetrameric, monomeric and pentameric repeats. Furthermore, the A-rich repeats are predominant in each type of SSRs, whereas G-rich repeats are rare in the coding regions.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Bombyx
/
Peixe-Zebra
/
Genoma
/
Caenorhabditis elegans
/
Repetições de Microssatélites
/
Etiquetas de Sequências Expressas
/
Drosophila melanogaster
/
Genética
/
Invertebrados
/
Anopheles
Limite:
Animais
Idioma:
Inglês
Revista:
Genomics, Proteomics & Bioinformatics
Ano de publicação:
2004
Tipo de documento:
Artigo
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