• 제목/요약/키워드: Biochemistry

검색결과 8,473건 처리시간 0.036초

Energy Status of Neurospora crassa Mutant nap in Relation to Accumulation of Carotenoids

  • Belozersk, Tatyana A.;Potapova, Tatyana V.;Isakova, Elena P.;Shurubor, Eugene I.;Savel'eva, Ludmila V.;Zvyagilskaya, Renata A.
    • Journal of Microbiology
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    • 제41권1호
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    • pp.41-45
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    • 2003
  • N crassa mutant strain nap showed reduced growth rate, decreased electric membrane potential, and elevated intracellular ATP content in comparison to the wild type. Blue light induced a hyperpolarization of the membrane potential in both strains. The analysis of oxidative and phosphorylation activities of mitochondria isolated from the two strains has revealed that nap utilized more efficient oxidative pathways. The higher intracellular ATP content in the nap was presumably due to impaired transport systems of the plasma membrane, and to a lesser extent to the functioning of the fully competent respiratory chain. The excess ATP possibly accounts for carotenoid accumulation in the mutant.

Metabolic features and regulation in cell senescence

  • Kwon, So Mee;Hong, Sun Mi;Lee, Young-Kyoung;Min, Seongki;Yoon, Gyesoon
    • BMB Reports
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    • 제52권1호
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    • pp.5-12
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    • 2019
  • Organismal aging is accompanied by a host of progressive metabolic alterations and an accumulation of senescent cells, along with functional decline and the appearance of multiple diseases. This implies that the metabolic features of cell senescence may contribute to the organism's metabolic changes and be closely linked to age-associated diseases, especially metabolic syndromes. However, there is no clear understanding of senescent metabolic characteristics. Here, we review key metabolic features and regulators of cellular senescence, focusing on mitochondrial dysfunction and anabolic deregulation, and their link to other senescence phenotypes and aging. We further discuss the mechanistic involvement of the metabolic regulators mTOR, AMPK, and GSK3, proposing them as key metabolic switches for modulating senescence.

Inhibition of lipopolysaccharide-induced inflammatory mediators NO, PGs, TNF-$\alpha$ expression by MeOH extract of Kochia scoparia in RAW264.7 cells.

  • Shin, Kyung-Min;Kim, Yang-Hee;Park, Wan-Soo;Lee, Kyung-Tae;Park, Hee-Jun;Choi, Jung-Won
    • 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.214.1-214.1
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    • 2003
  • MeOH extract obtained from the Kochia scoparia (KS) was observed to inhibit tumor necrosis factor-alpha (TNF-alpha), prostaglandins (PGs) and nitric oxide(NO) production in a lipopolysaccharide (LPS)-stimulated murine macrophage cell line, RAW 264.7. These effects of MeOH-KS were based on modulation of iNOS and COX-2 level. Western blot analysis showed that MeOH-KS reduced the iNOS and COX-2 level in LPS activated macrophages, in a dose dependent manner without cNOS and COX-1 protein level. (omitted)

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Fungal Proteomics

  • Kim, Ki-Young;Shin, Yu-Kyong;Paik, Young-Ki
    • 한국생물공학회:학술대회논문집
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    • 한국생물공학회 2003년도 생물공학의 동향(XIII)
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    • pp.34-34
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    • 2003
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NMR Studies on Cyclic OPG Peptide

  • Kim, Young-Mee;Lim, Sung-Kil;Lee, Weon-Tae
    • 한국자기공명학회:학술대회논문집
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    • 한국자기공명학회 2001년도 제18회 학술발표회
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    • pp.33-33
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    • 2001
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