생명과학회지 (Journal of Life Science)

  • 제23권10호
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  • Pages.1260-1266
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  • 2013
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  • 1225-9918(pISSN)
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  • 2287-3406(eISSN)
한국생명과학회 (Korean Society of Life Science)
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느티만가닥버섯의 ITS (internal transcribed spacer) 영역의 2차구조 분석

Secondary Structure of the Ribosomal Internal Transcribed Spacer (ITS) Region of Hypsizygus marmoreus

  • 투고 : 2013.07.12
  • 심사 : 2013.10.07
  • 발행 : 2013.10.30
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초록

본 연구에서는 H. marmoreus 3-10균주와 H. marmoreus 1-1균주의 ribosomal DNA (rDNA) cluster의 분석이 수행되었다. Small subunit (SSU)와 intergenic spacer 2 (IGS 2)는 부분적으로 염기서열이 결정되었고, internal transcribed spacer 1 (ITS 1), 5.8S, internal transcribed spacer 2 (ITS 2), large subunit (LSU), intergenic spacer 1 (IGS 1), 5S는 완전하게 염기서열이 결정 되었다. 팽이버섯 H. marmoreus 3-10균주와 H. marmoreus 1-1균주의 rDNA cluster는 총 7,049 bp로 결정되었다. SSU은 1,796 bp, ITS1은 229 bp, 5.8S은 153 bp, ITS2는 223 bp, LSU은 3,348 bp, IGS1은 390 bp, IGS2은 900 bp로 염기서열이 분석되었다. 결정된 rDNA cluster의 총 7,049 bp 중에서 17 bp가 다름이 확인되었고, 각각 SSU (2 bp), ITS (3 bp), LSU (9 bp), IGS (3 bp)에서 차이를 확인하였다. ITS regions의 2차 구조 결과 5개의 stem-loop가 있음이 드러났다. 흥미롭게도, 이들 stem-loop 사이에서 stem-loop V에서 한 개의 상이한 염기가 다른 2차 구조를 나타냄을 확인하였다.

The ribosomal DNA (rDNA) clusters of Hypsizygus marmoreus 3-10 and H. marmoreus 1-1 were analyzed in this study. The small subunit (SSU) and intergenic spacer 2 (IGS 2) was partially sequenced. The internal transcribed spacer 1 (ITS 1), 5.8S, internal transcribed spacer 2 (ITS 2), large subunit (LSU), intergenic spacer 1 (IGS 1), and 5S were completely sequenced. The rDNA clusters of H. marmoreus 3-10 and H. marmoreus 1-1 were 7,049 bp in length. The sequence of SSU rDNA, which corresponded to 18S rDNA, was 1,796 bp in length, and the sequence of LSU rDNA, which corresponded to 28S rDNA, was 3,348 bp in length. The ITS region that variable region and IGS region that non-transcribed spacer was 462 bp and 1,290 bp in length. The sequence of 5.8S rDNA and 5S rDNA was 153 bp and 43 bp in length, respectively. The 17 bp of the rDNA cluster in the H. marmoreus 3-10 strain was different to that in the H. marmoreus 1-1 strain, with 2 bp in the SSU, 3 bp in the ITS, 9 bp in the LSU, and 3 bp in the IGS. The analysis of the secondary structure revealed that the ITS regions of H. marmoreus 3-10 and H. marmoreus 1-1 have five stem-loop structures. Interestingly, among these structures, one different nucleotide sequence resulted in a different secondary structure in stem-loop V.

키워드

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