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  • Title: Transcribed repetitive DNA sequences in telomeric regions of rice (Oryza sativa).
    Author: Wu T, Wang Y, Wu R.
    Journal: Plant Mol Biol; 1994 Oct; 26(1):363-75. PubMed ID: 7948882.
    Abstract:
    We have isolated and characterized from rice three repetitive DNA sequences, Os48, Osc-567, and OsG3-430. Our results indicate that these repetitive sequences are highly transcribed, and transcripts complementary to both strands of the Os48 family of sequences account for up to 3% of the total cellular RNA. Pulsed-field gel electrophoresis, restriction mapping, and DNA sequence analyses have revealed a complex pattern of structural organization of the three families of repetitive sequences. Os48 and Osc-567 are organized in long tandem arrays, whereas copies of the OsG3-340 sequence are interspersed with other sequences including arrays of the Os48 and Osc567 families. Interestingly, the three families of repetitive sequences are closely linked not only to each other, but also to telomeric sequences of rice, suggesting that transcription of these repetitive sequences may occur in regions very close to telomeres in rice.
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