• 제목/요약/키워드: polymerase

검색결과 5,050건 처리시간 0.041초

Erwinia rhapontici의 Pectate Lyase 유전자 Cloniong (Cloning of Pectate Lyase Gene in Erwinia rhapontici)

  • 최재을;강권규;한광섭
    • 한국식물병리학회지
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    • 제10권3호
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    • pp.157-162
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    • 1994
  • Erwinia rhapontici causes soft-rot disease in a number of plants such as onion, garlic and hyacinth. There has been no report that E. rhapontici produces pectate lyase. Pel gene was cloned from genomic DNA of the parasitic soft-rot E. rhapontici polymerase chain reaction by using synthetic oligonulceotide primers designed from the pel 1 to E. carotovora. The recombinant plasmid pJE101 containing pectate lyase gene, when introduced into E. coli DH5$\alpha$, produced pectate lyase an macerated hyacinth tissue.

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Principle of Emulsion PCR and Its Applications in Biotechnology

  • Chai, Changhoon
    • 한국동물생명공학회지
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    • 제34권4호
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    • pp.259-266
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    • 2019
  • Emulsion polymerase chain reaction (PCR) is performed on compartmentalized DNA, allowing a large number of PCR reactions to be carried out in parallel. Emulsion PCR has unique advantages in DNA amplification. It can be applied in many molecular biological assays, especially those requiring highly sensitive and specific DNA amplification. This review discusses the principle of emulsion PCR and its applications in biotechnology. Related technologies are also discussed.

Understanding the RNA-Specificity of HCV RdRp: Implications for Anti-HCV Drug Discovery

  • Kim, Jin-young;Chong, You-hoon
    • Bulletin of the Korean Chemical Society
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    • 제27권1호
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    • pp.59-64
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    • 2006
  • Unlike other viral polymerases, HCV RNA-dependent RNA polymerase (RdRp) has not been successfully inhibited by nucleoside analogues presumably due to its strong substrate specificity for RNA. Thus, in order to understand the RNA-specificity of HCV RdRp, the structural characteristics of the active site was investigated. The hereto unknown 2-OH binding pocket at the active site of RdRp provides invaluable implication for the development of novel anti-HCV nucleoside analogues.

Differential regulation of gene expression by RNA polymerase II in response to DNA damage

  • Heo, Jeong-Hwa;Han, Jeung-Whan;Lee, Hyang-Woo;Cho, Eun-Jung
    • 대한약학회:학술대회논문집
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    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.1
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    • pp.219.1-219.1
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    • 2003
  • RNA polymerase II (pol II) is known to cycle between hyperphosphorylated and hypophosphorylated forms during transcription cycle. These extensive phosphorylation/dephosphorylation event occurs in the C-terminal domain (CTD) of the largest subunit of pol II which consists of a tandemly repeated heptapeptide motif with consensus of YSPTSPS. (omitted)

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P.C.R 기법(技法)을 이용(利用)한 들메나무 DNA sequence의 변이조사(變異調査) (Detection of DNA Sequence Polymorphism by Polymerase Chain Reaction in Fraxinus mandshurica Rupr Growing in Korea)

  • 나천수;노은운;김영중;신창호;송원섭;김세현
    • 한국산림과학회지
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    • 제81권4호
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    • pp.320-324
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    • 1992
  • 들메나무(Fraxinus mandshurica Rupr.) 는 우리나라에서 두가지의 서로 다른 형태(形態)가 자생(自生)하고 있는 것으로 알려져 있다. 최근(最近)에 개발(開發)된 PCR기법(技法)을 이용(利用)하여 이 두 형태(形態)의 들메나무 DNA의 변이(變異)를 조사(調査)하였다. DNA 합성(合成) 효소(酵素)와 인공합성(人工合成)된 primer를 이용(利用)하여 이 수종(樹種)의 DNA를 증폭(增幅)시켜 비교(比較)한 결과(結果)이 두 형태(形態)는 DNA 비례(排列)에서 서로 다른것으로 나타났다. DNA변이(變異)는 같은 형태내(形態內)의 개체간(個體間)에도 나타나나 각 형태별(形態別)로 뚜렷하게 구분(區分)되어 형태별(形態別)로 특징적(特徵的)인 band들이 관찰(觀察)되었다. 이러한 특징적(特徵的)인 band들로 두 형태(形態)를 구분(區分)할 수 있었다.

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Multiplex Polymerase Chain Reaction을 이용한 당귀 종 판별 (Development of Multiplex Polymerase Chain Reaction Assay for Identification of Angelica Species)

  • 김용상;박혁주;이동희;김현규
    • 한국약용작물학회지
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    • 제26권1호
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    • pp.26-31
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    • 2018
  • Background: Angelica gigas, A. sinensis, and A. acutiloba are commercially important in the herbal medicine market, and among them, A. gigas has the highest economic value and price. However, their similar morphological traits are often used for fraud. Despite their importance in herbal medicine, recognition of the differences between Angelica species is currently inadequate. Methods and Results: A multiplex polymerase chain reaction (PCR) method was developed for direct detection and identification of A. gigas, A. sinensis, and A. acutiloba. The gene for the distinction of species was targeted at ITS in the nucleus and trnC-petN gene in chloroplasts. The optimized multiplex PCR in the present study utilized each Angelica species-specific primer pairs. Each primer pair yielded products of 229 base pairs (bp) for A. gigas, 53 bp for A. sinensis, 170 bp for A. acutiloba. Additionally non-specific PCR products were not detected in similar species by species-specific primers. Conclusions: In the present study, a multiplex-PCR assay, successfully assessed the authenticity of Angelica species (A. gigas, A. sinensis, and A. acutiloba). and whole genome amplification (WGA) was performed after DNA extraction to identify, the species in the product. The detection method of raw materials developed in the present study could be applied to herbal medicine and health functional food management.