Abstract
Transforming acidic coiled-coil proteins (TACC1, 2, and 3) are essential proteins associated with the assembly of spindle microtubules and maintenance of bipolarity. Dysregulation of TACCs is associated with tumorigenesis, but studies of microsatellite instability in TACC genes have not been extensive. Microsatellite or simple sequence repeat instability is known to cause many types of cancer. The present in silico analysis of SSRs in human TACC gene sequences shows the presence of mono- to hexa-nucleotide repeats, with the highest densities found for mono- and di-nucleotide repeats. Density of repeats is higher in introns than in exons. Some of the repeats are present in regulatory regions and retained introns. Human TACC genes show conservation of many repeat classes. Microsatellites in TACC genes could be valuable markers for monitoring numerical chromosomal aberrations and or cancer.
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I am extremely grateful to Mr. Abhay Pendse for help with computational analysis.
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10528_2013_9577_MOESM1_ESM.tif
Supplementary Fig. 1. Motif density of three gene sequences in nine mammals. Mammals, followed by gene designations TACC1, TACC2, or TACC3, are identified across the top. Nucleotide sequences are identified down the left. Color scale, SSRs per Kbp (TIFF 15595 kb)
10528_2013_9577_MOESM2_ESM.tif
Supplementary Fig. 2. Motif density in exons and introns of three gene sequences in nine mammals. Mammals and genes TACC1, TACC2, or TACC3, followed by codes for exon (E) or intron (I), are identified across the top. Nucleotide sequences are identified down the left. Color scale, SSRs per Kbp (TIFF 14188 kb)
10528_2013_9577_MOESM3_ESM.tif
Supplementary Fig. 3. Conservation of repeats by class in TACC1, TACC2, and TACC3 gene sequences of eight mammals, as a percentage of human TACC sequences. Mammals, followed by classes (mono- through hexa-nucleotide), are identified across the top. Genes, followed by total, exon, or intron, are identified down the left. Color scale, percentage of human SSRs (TIFF 3556 kb)
10528_2013_9577_MOESM4_ESM.tif
Supplementary Fig. 4. Conservation of repeat motifs in TACC1, TACC2, and TACC3 gene sequences of eight mammals, as a percentage of human TACC sequences. Mammals and genes TACC1, TACC2, or TACC3 are identified across the top. Nucleotide sequences are identified down the left. Color scale, percentage of human SSRs (TIFF 6723 kb)
10528_2013_9577_MOESM5_ESM.tif
Supplementary Fig. 5. Conservation of repeat motifs in exons and introns of TACC1, TACC2, and TACC3 gene sequences of eight mammals, as a percentage of human TACC sequences. Mammals and genes TACC1, TACC2, or TACC3, followed by codes for exon (E) or intron (I), are identified across the top. Nucleotide sequences are identified down the left. Color scale, percentage of human SSRs (TIFF 8101 kb)
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Trivedi, S. Repeats in Transforming Acidic Coiled-Coil (TACC) Genes. Biochem Genet 51, 458–473 (2013). https://doi.org/10.1007/s10528-013-9577-x
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DOI: https://doi.org/10.1007/s10528-013-9577-x