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[๋ฌผ๋้ฉ๋ถ„์„์‹คํ—˜]Foster resonance energy transfer (FRET)

"[๋ฌผ๋้ฉ๋ถ„์„์‹คํ—˜]Foster resonance energy transfer (FRET)"์— ๋Œ€ํ•œ ๋‚ด์šฉ์ž…๋‹ˆ๋‹ค.
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์ตœ์ดˆ๋“ฑ๋ก์ผ 2020.10.05 ์ตœ์ข…์ ฟ’์ž‘์ผ 2020.10
9P ๋ฏธ๋้ฉ๋ณด๊ธฐ
[๋ฌผ๋้ฉ๋ถ„์„์‹คํ—˜]Foster resonance energy transfer (FRET)
  • ๋ฏธ๋้ฉ๋ณด๊ธฐ

    ์†Œ๊ฐœ

    "[๋ฌผ๋้ฉ๋ถ„์„์‹คํ—˜]Foster resonance energy transfer (FRET)"์— ๋Œ€ํ•œ ๋‚ด์šฉ์ž…๋‹ˆ๋‹ค.

    ๋ชฉ์ฐจ

    1. ์‹คํ—˜ ์ด๋ก  ๋ฐ ์›๋ฆฌ
    ๊ฐ€. ์‹คํ—˜ ์š”์•ฝ
    ๋‚˜. Fluorescence
    ๋‹ค. Time correlated single photon counting (TCSPC)
    ๋ผ. Foster resonance energy transfer (FRET)

    2. ์‹คํ—˜ ๋ฐฉ๋ฒ•
    ๊ฐ€. ์‹คํ—˜ ๊ณผ์ •

    3. ์‹คํ—˜ ๊ฒฐ๊ณผ
    ๊ฐ€. Emission spectra of buffer and DNA samples
    ๋‚˜. Fluorescence lifetimes of donor and acceptor
    ๋‹ค. FRET efficiency

    4. ํ† ์˜ ์‚ฌํ•ญ
    ๊ฐ€. ์‹คํ—˜ ๊ณ ์ฐฐ
    ๋‚˜. Assignments

    ๋ณธ๋ๅฉ๋‚ด์šฉ

    1. ์‹คํ—˜ ์ด๋ก  ๋ฐ ์›๋ฆฌ

    ๊ฐ€. ์‹คํ—˜ ์š”์•ฝ
    ๋ณธ ์‹คํ—˜์—์„œ๋Š” time-resolved fluorescence spectrometer๋ฅผ ์ด์šฉํ•˜์—ฌ Cy3 fluorophore donor์™ฟ’ Cy5 fluorophore acceptor์— ๋Œ€ํ•ด Foster resonance energy transfer (FRET)์— ์˜ํ•ด ๋‚˜ํƒ€๋‚˜๋Š” fluorophore emission spectra๋ฅผ ์ธก์ •ํ•˜์˜€๋‹ค. ๋˜ํ•œ, 565ใŽš์—์„œ์˜ Time correlated single photon counting (TCSPC) ๋ฅผ ์ด์šฉํ•˜์—ฌ fluorophore intensity decay curve์˜ ์ธก์ •์„ ํ†ตํ•ด fluorophore lifetime์„ ๊ณ„์‚ฐํ•˜์˜€๋‹ค. ๋˜ํ•œ ์ด๋ฅผ ์ด์šฉํ•˜์—ฌ FRET efficiency๋ฅผ ๊ณ„์‚ฐํ•˜๊ณ , ์ด๋ก ์ ์ธ ๊ณ„์‚ฐ๊ฐ’๊ณผ ๋น„๊ต ๋ฐ ๋ถ„์„ํ•˜์˜€๋‹ค.

    ๋‚˜. Fluorescence
    Fluorescence๋Š” molecule์ด ์—๋„ˆ์ง€๋ฅผ ํก์ˆ˜ํ•˜์—ฌ ๋“ค๋“  ์ƒํƒœ์—์„œ ์กด์žฌํ•˜๋‹ค๊ฐ€ ๋ฐ”๋‹ฅ ์ƒํƒœ๋กœ ๋‚ด๋ ค์˜ค๋ฉฐ ๊ทธ ์—๋„ˆ์ง€ ์ฐจ์ด ๋งŒํผ์˜ ๋น›์„ ์ž๋ฐœ์ ์œผ๋กœ ๋ฐฉ์ถœํ•˜๋ฉด์„œ ๋‚˜ํƒ€๋‚œ๋‹ค. Figure 12์—์„œ ๋‚˜ํƒ€๋‚ธ ์ด๋Ÿฌํ•œ ๊ณผ์ •์—๋Š” phosphorescence๋„ ์กด์žฌํ•˜๋Š”๋ฐ, phosphorescence์™ฟ’๋Š” ๋‹ฌ๋ฆฌ, fluorescence๋Š” ์ˆ˜ ns ์ด๋‚ด ์— ๋ฐฉ์ถœ๋˜๊ธฐ ๋•Œ๋ฌธ์— ๋น ๋ฅธ ์‹œ๊ฐ„ ๋‚ด์— ์ผ์–ด๋‚œ๋‹ค๋Š” ์ ์—์„œ ์ฐจ์ด๊ฐ€ ์žˆ๋‹ค. Fluorescence์˜ decay ๊ณผ์ •์—์„œ๋Š” radiative pathway์™ฟ’ nonradiative pathway๊ฐ€ ์กด์žฌํ•˜๊ณ , ์ด ๊ณผ์ •์— ๋”ฐ๋ผ์„œ emission wavelength๊ฐ€ ๋‹ค๋ฅด๊ฒŒ ๋‚˜ํƒ€๋‚œ๋‹ค. Fluorescence ์ธก์ • ๋ฐฉ์‹์—๋Š” steady-state measurement, time-resolved measurement๊ฐ€ ์กด์žฌํ•˜๋Š”๋ฐ ๋ณธ ์‹คํ—˜์—์„œ๋Š” fluorescence๊ฐ€ decay๋˜๋Š” ๊ฒƒ์— ๊ฑธ๋ฆฌ๋Š” ์‹œ๊ฐ„๋ณด๋‹ค ๋” ์งง์€ ์‹œ๊ฐ„ ๋™์•ˆ pulse๋ฅผ ๋‚ด๋ณด๋‚ด๋Š” ๋ฐฉ์‹์ธ time-resolved measurement๋ฅผ ์ด์šฉํ•˜์—ฌ fluorescence decay๋ฅผ ์ธก์ •ํ•˜์˜€๋‹ค.

    ์ฐธ๊ณ ์ž๋ฃŒ

    ยท Monica M., Biotechnology annual review, 2005, 11, 227-252.
    ยท Auston D. H.; et al. Appl. Phys. Lett. 1978, 33, 437-440.
    ยท Becker W.; et al. Microscopy research and technique, 2004, 58-66. Gust A.; et al. Molecules, 2014, 19, 15824-15865.
    ยท Massey M.; et al. Analytica Chimica Acta, 2006, 568, 181-189. Lin S. H.; et al. Phys. Rev., 1993, 47, 3698.
    ยท Sanborn M. E.; et al. J. Phys. Chem., 2007, 111, 11064-11074.
    ยท Studier F. W.; et al. Journal of molecular biology, 1965, 11, 373-390.
    ยท Shimomura O., Journal of microscopy, 2005, 217, 3-15.
    ยท Heim R., Tsein R. Y., Current biology, 1996, 6, 178-182.
    ยท Craig S. W., Pardo J. V., Journal of cell biology, 1979, 80, 203-210.
    ยท Rowland C. E.; et al. Methods and applications in Fluorescence, 2015, 3, 1-45.
    ยท R. Rahul,; et al. Nat Methods, 2008, 5, 507-516.
  • ์ž๋ฃŒํ›„๊ธฐ

      Ai ๋ฆฌ๋ทฐ
      ์ด ์ž๋ฃŒ๋ฅผ ํ†ตํ•ด ์ƒˆ๋กœ์šด ์ง€์‹๊ณผ ํ†ต์ฐฐ์„ ์–ป์„ ์ˆ˜ ์žˆ์—ˆ๊ณ , ๊ณผ์ œ๋ฅผ ๋ฅผ ๋ณด์™„ํ•˜๋Š” ๋ฐ ํฐ ๋„์›€์ด ๋˜์—ˆ์Šต๋‹ˆ๋‹ค. ๋งค์šฐ ๋งŒ์กฑ์Šค๋Ÿฌ์› ์Šต๋‹ˆ๋‹ค. ์ถ”์ฒœํ•  ๋งŒํ•œ ์ž๋ฃŒ์ž…๋‹ˆ๋‹ค.
    • ์ž์ฃผ๋ฌป๋Š”์งˆ๋ๅฉ์˜ ๋‹ต๋ณ€์„ ํ™•์ธํ•ด ์ฃผ์„ธ์š”

      ํ•ดํ”ผ์บ ํผ์Šค FAQ ๋”๋ต–๊ธฐ

      ๊ผญ ์•Œ์•„์ฃผ์„ธ์š”

      • ์ž๋ฃŒ์˜ ์ •๋ณด ๋ฐ ๋‚ด์šฉ์˜ ์ง„์‹ค์„ฑ์— ๋Œ€ํ•˜์—ฌ ํ•ดํ”ผ์บ ํผ์Šค๋Š” ๋ณด์ฆํ•˜์ง€ ์•Š์œผ๋ฉฐ, ํ•ด๋‹น ์ •๋ณด ๋ฐ ๊ฒŒ์‹œ๋ฌผ ์ €์ž‘๊ถŒ๊ณผ ๊ธฐํƒ€ ๋ฒ•์  ์ฑ…์ž„์€ ์ž๋ฃŒ ๋“ฑ๋ก์ž์—๊ฒŒ ์žˆ์Šต๋‹ˆ๋‹ค.
        ์ž๋ฃŒ ๋ฐ ๊ฒŒ์‹œ๋ฌผ ๋‚ด์šฉ์˜ ๋ถˆ๋ฒ•์  ์ด์šฉ, ๋ฌด๋‹จ ์ „์žฌโˆ™๋ฐฐํฌ๋Š” ๊ธˆ์ง€๋˜์–ด ์žˆ์Šต๋‹ˆ๋‹ค.
        ์ €์ž‘๊ถŒ์นจํ•ด, ๋ช…์˜ˆํ›ผ์† ๋“ฑ ๋ถ„์Ÿ ์š”์†Œ ๋ฐœ๊ฒฌ ์‹œ ๊ณ ๊ฐ๋น„๋ฐ”์นด์ง€๋…ธ Viva์˜ ์ €์ž‘๊ถŒ์นจํ•ด ์‹ ๊ณ ๋น„๋ฐ”์นด์ง€๋…ธ Viva๋ฅผ ์ด์šฉํ•ด ์ฃผ์‹œ๊ธฐ ๋ฐ”๋ž๋‹ˆ๋‹ค.
      • ํ•ดํ”ผ์บ ํผ์Šค๋Š” ๊ตฌ๋งค์ž์™ฟ’ ํŒ๋งค์ž ๋ชจ๋‘๊ฐ€ ๋งŒ์กฑํ•˜๋Š” ์„œ๋น„์Šค๊ฐ€ ๋˜๋„๋ก ๋…ธ๋ ฅํ•˜๊ณ  ์žˆ์œผ๋ฉฐ, ์•„๋ž˜์˜ 4๊ฐ€์ง€ ์ž๋ฃŒํ™˜๋ถˆ ์กฐ๊ฑด์„ ๊ผญ ํ™•์ธํ•ด์ฃผ์‹œ๊ธฐ ๋ฐ”๋ž๋‹ˆ๋‹ค.
        ํŒŒ์ผ์˜ค๋ฅ˜ ์ค‘๋ณต์ž๋ฃŒ ์ €์ž‘๊ถŒ ์—†์Œ ์„ค๋ช…๊ณผ ์‹ค์ œ ๋‚ด์šฉ ๋ถˆ์ผ์น˜
        ํŒŒ์ผ์˜ ๋‹ค์šด๋กœ๋“œ๊ฐ€ ์ œ๋Œ€๋กœ ๋˜์ง€ ์•Š๊ฑฐ๋‚˜ ํŒŒ์ผํ˜•์‹์— ๋งž๋Š” ํ”„๋กœ๊ทธ๋žจ์œผ๋กœ ์ •์ƒ ์ž‘๋™ํ•˜์ง€ ์•Š๋Š” ๊ฒฝ์šฐ ๋‹ค๋ฅธ ์ž๋ฃŒ์™ฟ’ 70% ์ด์ƒ ๋‚ด์šฉ์ด ์ผ์น˜ํ•˜๋Š” ๊ฒฝ์šฐ (์ค‘๋ณต์ž„์„ ํ™•์ธํ•  ์ˆ˜ ์žˆ๋Š” ๊ทผ๊ฑฐ ํ•„์š”ํ•จ) ์ธํ„ฐ๋„ท์˜ ๋‹ค๋ฅธ ์‚ฌ์ดํŠธ, ์—ฐ๊ตฌ๊ธฐ๊ด€, ํ•™๊ป“, ์„œ์  ๋“ฑ์˜ ์ž๋ฃŒ๋ฅผ ๋„์šฉํ•œ ๊ฒฝ์šฐ ์ž๋ฃŒ์˜ ์„ค๋ช…๊ณผ ์‹ค์ œ ์ž๋ฃŒ์˜ ๋‚ด์šฉ์ด ์ผ์น˜ํ•˜์ง€ ์•Š๋Š” ๊ฒฝ์šฐ

    ์ฐพ์œผ์‹œ๋˜ ์ž๋ฃŒ๊ฐ€ ์•„๋‹Œ๊ฐ€์š”?

    ์ง€๊ธˆ ๋ณด๋Š” ์ž๋ฃŒ์™ฟ’ ์—ฐ๊ด€๋˜์–ด ์žˆ์–ด์š”!
    ์™ผ์ชฝ ํ™”์‚ดํ‘œ
    ์˜ค๋ฅธ์ชฝ ํ™”์‚ดํ‘œ
    ๋ฌธ์„œ ์ดˆ์•ˆ์„ ์ƒ์„ฑํ•ด์ฃผ๋Š” EasyAI
    ์•ˆ๋…•ํ•˜์„ธ์š”. ํ•ดํ”ผ์บ ํผ์Šค์˜ ๋ฐฉ๋Œ€ํ•œ ์ž๋ฃŒ ์ค‘์—์„œ ์„ ๋ณ„ํ•˜์—ฌ ๋‹น์‹ ๋งŒ์˜ ์ดˆ์•ˆ์„ ๋งŒ๋“ค์–ด์ฃผ๋Š” EasyAI ์ž…๋‹ˆ๋‹ค.
    ์ €๋Š” ์•„๋ž˜์™ฟ’ ๊ฐ™์ด ์ž‘์—…์„ ๋„์™ฟ’๋“œ๋ฆฝ๋‹ˆ๋‹ค.
    - ์ฃผ์ œ๋งŒ ์ž…๋ ฅํ•˜๋ฉด ๋ชฉ์ฐจ๋ถ€ํ„ฐ ๋ณธ๋ๅฉ๋‚ด์šฉ๊นŒ์ง€ ์ž๋™ ์ƒ์„ฑํ•ด ๋“œ๋ฆฝ๋‹ˆ๋‹ค.
    - ์žฅ๋ฌธ์˜ ์ฝ˜ํ…์ธ ๋ฅผ ์‰ฝ๊ณ  ๋น ๋ฅด๊ฒŒ ์ž‘์„ฑํ•ด ๋“œ๋ฆฝ๋‹ˆ๋‹ค.
    - ์Šคํ† ์–ด์—์„œ ๋ฌด๋ฃŒ ์บ์‹œ๋ฅผ ๊ณ„์ •๋ณ„๋กœ 1ํšŒ ๋ฐœ๊ธ‰ ๋ฐ›์„ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์ง€๊ธˆ ๋ฐ”๋กœ ์ฒดํ—˜ํ•ด ๋ณด์„ธ์š”!
    ์ด๋Ÿฐ ์ฃผ์ œ๋“ค์„ ์ž…๋ ฅํ•ด ๋ณด์„ธ์š”.
    - ์œ ์•„์—๊ฒŒ ์ ํ•ฉํ•œ ๋ฌธํ•™์ž‘ํ’ˆ์˜ ๊ธฐ์ค€๊ณผ ํŠน์„ฑ
    - ํ•œ๊ตญ์ธ์˜ ๊ฐ€์น˜๊ด€ ์ค‘์—์„œ ์ •์‹ ์  ๊ฐ€์น˜๊ด€์„ ์ด๋ฃจ๋Š” ๊ฒƒ๋“ค์„ ๋ฌธํ™”์  ๋ฌธ๋ฒ•์œผ๋กœ ์ •๋ฆฌํ•˜๊ณ , ํ˜„๋Œ€ํ•œ๊ตญ์‚ฌํšŒ์—์„œ ์ผ์–ด๋‚˜๋Š” ์‚ฌ๊ฑด๊ณผ ์‚ฌ๊ณ ๋ฅผ ๋น„๊ตํ•˜์—ฌ ์ž์‹ ์˜ ์˜๊ฒฌ์œผ๋กœ ๊ธฐ์ˆ ํ•˜์„ธ์š”
    - ์ž‘๋ณ„์ธ์‚ฌ ๋…ํ›„๊ฐ
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