Sequencing and annotated analysis of an Estonian human genome
2012
Lilleoja, Rutt | Sarapik, Aili | Reimann, Ene | Reemann, Paula | Jaakma, Ülle | Vasar, Eero | Kõks, Sulev
In present study we describe the sequencing and annotated analysis of the individual genome of Estonian. Using SOLID technology we generated 2,449,441,916 of 50-bp reads. The Bioscope version 1.3 was used for mapping and pairing of reads to the NCBI human genome reference (build 36, hg18). Bioscope enables also the annotation of the results of variant (tertiary) analysis. The average mapping of reads was 75.5% with total coverage of 107.72Gb. resulting in mean fold coverage of 34.6. We found 3,482,975 SNPs out of which 352,492 were novel. 21,222 SNPs were in coding region: 10,649 were synonymous SNPs, 10,360 were nonsynonymous missense SNPs, 155 were nonsynonymous nonsense SNPs and 58 were nonsynonymous frameshifts. We identified 219 CNVs with total base pair coverage of 37,326,300bp and 87,451 large insertion/deletion polymorphisms covering 10,152,256bp of the genome. In addition, we found 285,864 small size insertion/deletion polymorphisms out of which 133,969 were novel. Finally, we identified 53 inversions, 19 overlapped genes and 2 overlapped exons. Interestingly, we found the region in chromosome 6 to be enriched with the coding SNPs and CNVs. This study confirms previous findings, that our genomes are more complex and variable as thought before. Therefore, sequencing of the personal genomes followed by annotation would improve the analysis of heritability of phenotypes and our understandings on the functions of genome.
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