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Animal Biotechnology
Asian-Australasian Journal of Animal Sciences 2009;22(6): 893-899.
DOI: https://doi.org/10.5713/ajas.2009.80485    Published online April 30, 2009.
Comparative Analysis of Repetitive Elements of Imprinting Genes Reveals Eleven Candidate Imprinting Genes in Cattle
HyoYoung Kim, Heebal Kim*
Correspondence:  Heebal Kim,
Abstract
Few studies have reported the existence of imprinted genes in cattle compared to the human and mouse. Genomic imprinting is expressed in monoallelic form and it depends on a single parent-specific form of the allele. Comparative analysis of mammals other than the human is a valuable tool for explaining the genomic basis of imprinted genes. In this study, we investigated 34 common imprinted genes in the human and mouse as well as 35 known non-imprinted genes in the human. We found short interspersed nuclear elements (SINEs), long interspersed nuclear elements (LINEs), and long terminal repeats (LTRs) in imprinted (human and mouse) and control (cattle) genes. Pair-wise comparisons for the three species were conducted using SINEs, LINEs, and LTRs. We also calculated 95% confidence intervals of frequencies of repetitive sequences for the three species. As a result, most genes had a similar interval between species. We found 11 genes with conserved SINEs, LINEs, and LTRs in the human, mouse, and cattle. In conclusion, eleven genes (CALCR, Grb10, HTR2A, KCNK9, Kcnq1, MEST, OSBPL5, PPP1R9A, Sgce, SLC22A18, and UBE3A) were identified as candidate imprinted genes in cattle.
Keywords: Cattle; Correlation Coefficient; Imprinting Gene; Repetitive Elements
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