Korean Journal of Microbiology (미생물학회지)

The Microbiological Society of Korea (한국미생물학회)
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Molecular Cloning and Nucleotide Sequence of the G protein of a Korean Isolate of Infectious Hematopoietic Necrosis Virus

한국에서 분리된 IHNV-PRT의 G protein의 유전자 클로닝과 염기서열 분석

  • 김영조 (충북대 수의과대학 어류질병학연구실) ;
  • 허강준 (충북대 수의과대학 어류질병학연구실) ;
  • 박정우 (울산대 생명과학부 바이러스학 교실) ;
  • 박정문 ((주) 한국미생물연구소)
  • Published : 1999.09.01
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Abstract

To characterize the Korean isolate of infeciious hematopoietic necrosis virus (IHNV-PRT), a partial DNA fragment G gene of the MNV-PRT was amplified by RT-PCR. cloned inlo pGEM-T easy vector and analyzed for nucleotlde sequences. The size of the PCR pmduct was about 442 bp. The nucleotlde sequence homologies ofthe G gene of IHNV-PRT were 95%, 94%, 94% 94%, 93%, 53%. respectively. with those of foreign isolates of IHNV, IHNV-RB-76. IHNV-LR-73, MNV-K, IHNV-WRAC, Im-SRCV, IHNV-Col-85. However, it showed 81% homology with that of other fish rhabdovirus, hisame rhabdovirus (HRV). Frou~ the rcsults of deduced amino acid sequence homology analysis. G protein of IHNV-PRT showed 96% hornologies with those of foreign isolates of IHNV but 89% homology with that of HRV These results indicaled that, even though G gene of IHIW-PRT showed low homology with that of HRY it was highly conserved among different strains of THNV.

무지개송어 등의 연어과 어류에서 발생하는 전염성 조혈기괴사증 바이러스의 국내분리주인 IHNV-PRT 의 특성을 규명하기 위하여 IHNV-PRT 의 당단백질인 G를 암호화하고 있는 유전자의 일부를 PCR로 증폭한 후 cDNA를 클로닝하여 이들의 염기서열을 분석하였다. 이 PCR product 는 442 bp의 크기이었다. IHNV-PRT 의 G의 염기서열을 IHNV 의 다른 strain 과 비교 분석한 결과 IHNV-RB-76, IHNV-RB, IHNV-LR-73, IHNV-K, IHNV-WRAC, IHNV-SRCV, IHNV-CoI-85들의 G와 각각 95,94,94,94,93,93%의 상동성을 보였다. 그러나 넙치로부터 분리된 fish rhabdovirus 인 hirame rhabdovirus 의 G와는 81%의 사동성을 보였다. 이 결과로부터 IHNV 의 G 유전자는 비록 HRV 의 G 유전자와 유사성은 높지 않지만, IHNV 의 strain 에 관계없이 유사하다는 것을 알 수 있다.

Keywords

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