Pstl repeat: a family of short interspersed nucleotide element (SINE)-like sequences in the genomes of cattle, goat, and buffalo

Genome Génome / Conseil National De Recherches Canada
Faruk G SheikhPrabhakar Gupta

Abstract

The PstI family of elements are short, highly repetitive DNA sequences interspersed throughout the genome of the Bovidae. We have cloned and sequenced some members of the PstI family from cattle, goat, and buffalo. These elements are approximately 500 bp, have a copy number of 2 x 10(5) - 4 x 10(5), and comprise about 4% of the haploid genome. Studies of nucleotide sequence homology indicate that the buffalo and goat PstI repeats (type II) are similar types of short interspersed nucleotide element (SINE) sequences, but the cattle PstI repeat (type I) is considerably more divergent. Additionally, the goat PstI sequence showed significant sequence homology with bovine serine tRNA, and is therefore likely derived from serine tRNA. Interestingly, Southern hybridization suggests that both types of SINEs (I and II) are present in all the species of Bovidae. Dendrogram analysis indicates that cattle PstI SINE is similar to bovine Alu-like SINEs. Goat and buffalo SINEs formed a separate cluster, suggesting that these two types of SINEs evolved separately in the genome of the Bovidae.

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Citations

Mar 7, 2013·Fish & Shellfish Immunology·Takashi AokiTae Sung Jung
Feb 8, 2006·Genomics·Sang-Haeng ChoiHong-Seog Park
Jun 19, 2015·Evolution; International Journal of Organic Evolution·Kathryn M WilliamsJustin C Fay

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