LUYOR-3109高強度紫外催化光源促銷
LUYOR-3109紫外光源采用了9顆365nm大功率led,安裝有二次光學透鏡,輸出紫外線強度高,...
2024-08-08作者:激發光源事業部時間:2019-09-05 10:33:20瀏覽22164 次
黃色熒光蛋白(Yellow Fluorescent Protein ,YFP)可以看做綠色熒光蛋白的一種突變體,最初來源于維多利亞多管水母( Aequorea victoria)。相對于綠色熒光蛋白,其熒光向紅色光譜偏移,而這主要是由于蛋白203位蘇氨酸變為酪氨酸。其更大激發波長為514 nm,更大發射波長為527 nm。
美國路陽生產一款便攜式熒光蛋白激發光源,能夠方便快捷觀察EGFP在動植物體內的表達。我們免費提供樣機供科研院所試用,滿意付款。如有興趣,可添加微信號(luyor01)聯系。
EGFP在煙草上的表達
綠色熒光蛋白在果蠅上的表達
黃色熒光蛋白(Yellow Fluorescent Protein ,YFP)可以看做綠色熒光蛋白的一種突變體,最初來源于維多利亞多管水母( Aequorea victoria)。相對于綠色熒光蛋白,其熒光向紅色光譜偏移,而這主要是由于蛋白203位蘇氨酸變為酪氨酸。其更大激發波長為514 nm,更大發射波長為527 nm。excitation wavelength and the emission wavelength for yfp.
Yellow Fluorescent Proteins Excitation Emission
美國路陽生產有多款便攜式激發光源,無需熒光顯微鏡就能輕松觀察篩選黃色熒光蛋白表達陽性。LUYOR-3260CY便攜式YFP激發光源能直接分選YFP表達陽性的植株,能夠分選愈傷組織、植株、種子、菌落等。如欲進一步了解便攜式熒光蛋白激發光源,可直接聯系上海路陽生物技術有限公司的銷售客服。
YFP種類 | Excitation 激發光波長(nm) | Emission發射光波長(nm) |
EYFP | 514 | 527 |
Topaz | 514 | 527 |
Venus | 515 | 528 |
mCitrine | 516 | 529 |
YPet | 517 | 530 |
TagYFP | 508 | 524 |
PhiYFP | 525 | 537 |
ZsYellow1 | 529 | 539 |
mBanana | 540 | 553 |
LUV-40A熒光蛋白觀察眼鏡是用于觀察黃色熒光蛋白表達位置
在綠色熒光蛋白的晶體結構研究中發現203位蘇氨酸接近生色團后,對黃色熒光蛋白家族的研究才開始。將203位蘇氨酸突變為色氨酸可以穩定生色團在激發狀態的偶極矩,這樣可以使激發光和發射光的波長均增加20nm。并進一步改造成增強黃色熒光蛋白(EYFP)。EYFP是目前應用最廣最亮的熒光蛋白之一。EYFP的亮度和發射光譜的有機結合使得這一熒光探針在熒光多色成像中得到很好的應用。EYFP還可以與增強青色熒光蛋白(ECFP)或GFP2一起應用到FRET中。然而,黃色熒光蛋白也存在一些問題,如對酸性條件非常敏感,pH6.5時會失去近50%的熒光。除此之外,EYFP對氯離子非常敏感,而且光漂白現象比綠色熒光蛋白還嚴重。
對黃色熒光蛋白的結構研究已經解決了上述問題。Citrine變種的亮度與黃色熒光蛋白相當,而且可以抗光漂白、酸性條件和其他環境因素的改變。一種珊瑚蛋白,ZsYellow1,產生的真正的黃光是多色熒光實驗中的理想選擇。像ZsGreen1一樣,這個衍生物也不能像EYFP產生融合蛋白,還易于產生四聚物。越來越多黃色熒光蛋白的衍生物已經用于FRET研究中,在其他研究中也表現出巨大的潛力。
Yellow fluorescent protein (YFP) is a mutant variant of GFP. In this case, a mutation was introduced after the discovery that threonine residue was present near the chromophore in GFP.
To bring stability to the excited dipole moment of chromophore, this threonine residue was mutated. This led to shift by 20 nm in the excitation and emission wavelength of the fluorescent protein, leading to longer wavelengths.
YFP was further improved that led to development of enhanced yellow fluorescent protein or eYFP. This is one of the brightest fluorescent proteins and is widely used for different imaging purposes. GFP and YFP are used in several cases to perform dual imaging, which is a procedure where two molecules are tagged to two different fluorescent proteins. Consequently, they can be imaged together in order to visualize and appraise their inter-dynamics.
Fluorochrome | Excitation Wavelength (Nanometers) | Emission Wavelength (Nanometers) |
---|---|---|
Acridine Orange (Bound to DNA) | 500 | 526 |
Alexa Fluor 488 | 495 | 519 |
Alexa Fluor 500 | 503 | 525 |
Aminofluorescein | 497 | 519 |
Astrazon Orange R | 470 | 540 |
Aurophosphine | 450-490 | 515 |
BCECF (Biscarboxyethylcarboxyfluorescein) | 505 | 530 |
BODIPY 492/515 (Difluoroboradiazaindacene) | 490 | 515 |
BODIPY 493/503 | 500 | 506 |
BODIPY 500/510 | 509 | 515 |
BODIPY 505/515 | 502 | 510 |
BODIPY FL | 503 | 512 |
Calcein | 494 | 517 |
Calcium Green | 506 | 533 |
CellTracker Green CMFDA (Chloromethylfluorescein Diacetate) | 492 | 517 |
CFDA (Carboxyfluorescein Diacetate) | 495 | 520 |
Chinacrine | 450-495 | 515 |
Cl-NERF | 514 (High pH) | 540 (High pH) |
CyQuant GR | 480 | 520 |
DCFH (Carboxydichlorofluorescein) | 505 | 535 |
DiBAC4(3) (Bisdibutylbarbituric Acid) | 493 | 516 |
DiO (Dipentyloxacarbocyanine Iodide) | 484 | 502 |
DiOC16(3) | 484 | 501 |
DiOC18(3) | 484 | 501 |
DiOC2(3) | 482 | 497 |
DiOC5(3) | 484 | 500 |
DiOC6(3) | 484 | 511 |
DiOC7(3) | 482 | 504 |
DM-NERF | 510 (High pH) 497 (Low pH) | 536 (High pH) 527 (Low pH) |
DTAF (Fluorescein Dichlorotriazine) | 494 | 520 |
FAM (Carboxyfluorescein) | 492 | 518 |
FDA (Fluorescein Diacetate) | 495 | 520 |
FITC (Fluorescein Isothiocyanate) | 494 | 518 |
FlCRhR (Cyclic AMP Fluorosensor) | 500 | 517 |
Fluo-3 | 480-506 | 520 |
Fluo-4 | 494 | 516 |
Fluo-4FF | 494 | 518 |
Fluo-5F | 494 | 516 |
Fluo-5N | 493 | 518 |
Fluorescein | 494 | 518 |
Fluorescein Sulfonic Acid | 476 | 519 |
FluoroEmerald | 495 | 524 |
FluorX | 494 | 520 |
FluoZin-1 | 495 | 517 |
FluoZin-2 | 494 | 521 |
FluoZin-3 | 494 | 516 |
GFP-RS (Red-Shifted) | 498 | 516 |
LysoTracker Green DND-26 | 504 | 511 |
Magnesium Green | 506 | 531 |
MitoFluor Green | 490 | 516 |
MitoTracker Green FM | 490 | 516 |
NeuroTrace 500/525 | 500 | 525 |
NeuroTrace 515/535 | 515 | 535 |
Newport Green DCF | 506 | 535 |
Newport Green PDX | 490 | 518 |
Nonyl Acridine Orange | 495 | 519 |
Oligreen | 498 | 518 |
Oregon Green 488 | 496 | 524 |
Oregon Green 500 | 503 | 522 |
Oregon Green 514 | 511 | 530 |
PFB-F (Pentafluorobenzoyl Fluorescein) | 492 | 516 |
Phen Green FL | 492 | 517 |
Phen Green SK | 507 | 532 |
Pico Green | 502 | 523 |
PKH67 | 496 | 520 |
Rhodamine 110 | 496 | 520 |
Rhodamine 123 | 507 | 529 |
Rhodamine Green | 502 | 527 |
Sodium Green | 506 | 532 |
SpectrumGreen 1 | 497 | 524 |
SpectrumGreen 2 | 509 | 538 |
Stachyose Fluorescein | 491 | 516 |
SYBR Gold | 495 | 537 |
SYBR Green I | 498 | 522 |
SYBR Green II | 492 | 513 |
SYTO 11 | 508 | 527 |
SYTO 12 | 499 | 522 |
SYTO 13 | 488 | 509 |
SYTO 16 | 488 | 518 |
SYTO 21 | 494 | 517 |
SYTO 23 | 499 | 520 |
SYTO 24 | 490 | 515 |
SYTOX Green | 504 | 523 |
TAMRA (Carboxytetramethylrhodamine) | 504 | 529 |
YFP/EYFP (Enhanced Yellow Fluorescent Protein) | 512 | 529 |
YOYO-1, YO-PRO-1 | 491 | 509 |
黃光中心波長:570納米;黃光波長范圍:577nm-597nm,
更多黃光波長和可見光波長介紹可瀏覽:《可見光光譜》