Korean Journal of Plant Resources (한국자원식물학회지)

The Plant Resources Society of Korea (한국자원식물학회)
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Isolation and Characterization of Cyclophilin 1 (ClCyP1) Gene from Codonopsis lanceolata

더덕의 주근에서 유래한 Cyclophilin 1 (ClCyP1) 유전자의 분리 및 분석

  • Published : 2004.10.01
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Abstract

A cyclophilin 1 cDNA clone(GenBank accession no.CF924191) was isolated from the taproot of C. lanceolata and designed as C1CyP1. Determination of the nucleotide sequence of C1CyPl identified an open reading frame of 525bp, which shared high homologies with cyclophilins that were previously reported in other organisms. The C1CyP1 amino acid sequence possesses 7 amino acid residue stretch(KSGKPLH) that is characteristic of plant cytosolic dehydrins. Currently available amino acid residues of plant cyclophilins were compared to examine their phylogenetic relationship to C1CyP1. In the phylogenetic analysis, based on the aligned sequences, C1CyP1 showed high homology with arabidopsis ROC2 and rice CyP1. The transcript that corresponded to C1CyP1 was abundant in callus, but only basal level of transcript was detected in stem, leaf and root. For the study in the defense mechanism against various stresses, we report expression patterns of this gene by quantative RT-PCR.

더덕 뿌리에서 유래한 EST cDNA library로부터 cyclophilin 유전자와 높은 상동성을 나타내 는 full clone cDNA를 얻었다. 더덕의 cyclophilin, ClCyP1은 747 bp의 cDNA로 174개의 아미노산을 코딩하는 525 bp의 ORF를 가지고 있다. ClCyP1의 아미노산 서열을 분석한 결과, 기존에 보고된 식물들의 cytosolic cyclophilin들과 높은 상동성을 나타내었으며, 여러 식물의 cytosolic CyP의 공통적인 특징인 7개의 아미노산 잔기(KSGKPLH)를 가지고 있었다. RT-PCR분석 결과, 더덕의 ClCyP1은 식물의 조직 전체에서 발현되며, 저온, 고온, 그리고 염 스트레스에 대해 그 발현량이 증가하였다.

Keywords

References

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