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A novel gene is transcribed in the chicken alpha-globin gene domain in the direction opposite to the globin genesстатья
Информация о цитировании статьи получена из
Scopus,
Web of Science
Дата последнего поиска статьи во внешних источниках: 29 мая 2015 г.
- Авторы: Sjakste N., Iarovaia O.V., Razin S.V., Linares-Cruz G., Sjakste T., Le Gac V., Zhao Z., Scherrer K.
- Журнал: Mol. Gen. Genet
- Том: 262
- Номер: 6
- Год издания: 2000
- Первая страница: 1012
- Последняя страница: 1021
- DOI: 10.1007/PL00008644
- Аннотация: A novel gene transcribed in the direction opposite to that of the globin genes was found in the chicken alpha-globin gene domain. Northern hybridisation with single-stranded riboprobes revealed that a 4.5-kb poly(A)+ RNA is transcribed in antisense polarity with respect to the globin genes. The transcription unit encoding this RNA seems to overlap the entire cluster of alpha-globin genes and extends at least 15 kb upstream from pi, the first of the alpha-globin genes. This new transcript shows partial sequence homology with that encoded by the human "-14" gene. An oligonucleotide based on part of a restriction fragment of chicken DNA that is 80% homologous to exon 4 of the human "-14" gene hybridises with a 4.5-kb RNA molecule. In situ hybridisation of globin-antisense probes, that detect polyribosomal mRNAs of 1.7 and 2.5 kb on Northern blots, shows these "antisense" transcripts to be present in the cytoplasm. The 4.5-kb RNA is absent in polyribosomal poly(A)+ RNA and may, hence, represent a nuclear pre-mRNA transcribed from the chicken gene that is homologous to the human "-14" gene. The expression of this gene is not specific to erythroid cells; analogous transcripts were also detected in poly(A)+ RNA extracted from a chicken lymphoblastoma cell line (HP50). Taken together, these data allow us to postulate the existence in the chicken genome of a novel gene, for which we suggest the name "ggPRX" in analogy to the murine mProx1, a gene identified in the upstream region of the alpha-globin gene domain in mice.
- Добавил в систему: Разин Сергей Владимирович