• 제목/요약/키워드: molecular evolution

검색결과 525건 처리시간 0.043초

Crystal structure and functional analysis of the surE protein identify a novel phosphatase family

  • Lee, Jae-Young;Kwak, Jae-Eun;Suh, Se-Won
    • 한국생물물리학회:학술대회논문집
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    • 한국생물물리학회 2001년도 학술 발표회 진행표 및 논문초록
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    • pp.19-19
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    • 2001

  • The genome sequencing has revealed a large number of proteins of unknown or little characterized functions that have been well conserved during evolution. It remains a great challenge to decipher the molecular and physiological functions of these proteins. One example of the evolutionarily conserved protein family with little understood function is the surE family.(omitted)

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Effects of Recombination on the Pathogenicity and Evolution of Pepper mottle virus

  • Jonson, Miranda Gilda;Seo, Jang-Kyun;Cho, Hong-Soo;Kim, Jeong-Soo;Kim, Kook-Hyung
    • The Plant Pathology Journal
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    • 제25권4호
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    • pp.417-421
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    • 2009

  • The analysis of the full length genome of Korean isolates of Pepper mottle virus (PepMoV) in previous study showed molecular variations and are found to be related to symptom variation and pathogenicity (Kim et al., 2009, Virus Res. 144:83-88). To fully understand the molecular variation of PepMoV in Korea, we further assessed the role of RNA recombination to biological variation and evolution of PepMoV. Full-length genome of a total of 17 Korean-PepMoV and 2 American (CA and FL) isolates were examined for possible detection of genetic recombination using different recombination detections programs and detected 5 and 8 tentative recombination events using RDP3 and Splits Tree4 programs, respectively. Interestingly, tentative recombinants detected such as isolates 57, 134 and 217 were previously identified as severe isolates and 205135 and 205136 as differentiating isolates (Kim et al., 2009, Virus Res. 144:83-88). In addition, recombination was frequently detected in the Vb isolate, the first PepMoV isolate reported in Korea, suggesting significant involvement in the evolution of PepMoV in Korea. These initial results of our recombination analyses among PepMoV isolates in Korea may serve as clues to further investigate the biological variations and evolution of PepMoV brought about by recombination.

  • https://doi.org/10.5423/PPJ.2009.25.4.417 인용 PDF KSCI

Rhodopseudomonas sp. KCTC 1437에 의한 포도당으로부터의 수소 생성 (Evolution of Molecular Hydrogen from Glucose by Rhodopseudomonas sp. KCTC 1437)

  • Woo, Seung-Jin;Lee, Jeong-Kug;Kwon, Tae-Jong;Kho, Yung-Hee
    • 한국미생물·생명공학회지
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    • 제13권3호
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    • pp.257-263
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    • 1985

  • Rhodopseudomonas sp. KCTC 1437은 글루타민산이 질소원으로 존재할 때, 포도당으로부터 질소고 정효소 (nitrogenase)에 의해 효율적으로 수소를 생성하였다. in vivo에서 질소고정 효소의 활성도를 조사해 본 결과, 암모니아 이온의 제한 농도에서 키운 균체가 다른 질소원에서 키운 균체보다 더 큰 정도로 수소를 글루타민산 존재하에서 포도당으로부터 생성하였다. 이 균주는 또한 수소 생성의 억제물질 및 조건으로 알려져 있는 암모니아 이온의 높은 농도와 암조건에서 높은 정도로 수소를 생성했는데 이것은 수소효소 (hydrogenase)의 일종인 포르믹산 수소분해효소 (formic hydrogenlyase)에 의한 것이라 고려된다.

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