Intron Length Variation Observed in the Creatine Kinase and Ribosomal Protein Genes of the Swordfish Xiphias gladius

Seinen Chow, Haruko Takeyama

研究成果: Article査読

28 被引用数 (Scopus)

抄録

Introns may accumulate much higher genetic variation than exons. Universal primers were designed from the conservative nucleotide sequences of exons to amplify the flanking intron. Length variations in the S7 ribosomal protein (RP) gene intron 1 and mitochondrial creatine kinase (CK) gene intron 6 of the swordfish Xiphias gladius were found. Single or two banded fragment patterns in each individual were observed by agarose gel electrophoresis. Nucleotide sequence analysis revealed that highly polymorphic fragment patterns observed in the RP gene intron 1 were due to different numbers of a TG repeat (microsatellite). The length of the CK gene intron 6 was dimorphic, in which presence or absence of a 24 bp block was responsible for longer or shorter introns. Additional minor nucleotide insertion/deletions were observed independent of the RP microsatellite and the CK 24 bp block regions. The results of this investigation indicate that introns may be good sources of intraspecific genetic variation for population genetic studies and that the same set of primers can be used to amplify homologous intron regions even among distant species. Further, the conserved exon primed PCR strategy may be useful to prevent appearance of priming site polymorphism (null allele).

本文言語English
ページ(範囲)397-402
ページ数6
ジャーナルFisheries Science
64
3
DOI
出版ステータスPublished - 1998 6
外部発表はい

ASJC Scopus subject areas

  • Aquatic Science

フィンガープリント 「Intron Length Variation Observed in the Creatine Kinase and Ribosomal Protein Genes of the Swordfish Xiphias gladius」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル