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An Improvement on MS-based Epigenetic Analysis of Large Histone-derived Peptides by Using the IVU Interface.
- Fukuda, Tetsuya (author)
- Hike, Hiroshi (author)
- Usui, Fumihiko (author)
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- Bando, Yasuhiko (author)
- Kodama, Tatsuhiko (author)
- Kawamura, Takeshi (author)
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- (creator_code:org_t)
- Elsevier BV, 2015
- 2015
- English.
- In: Analytical Biochemistry. - : Elsevier BV. - 1096-0309 .- 0003-2697. ; 486:Online 05 June 2015, s. 14-16
- Journal article (peer-reviewed)
Abstract
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- Highly protonated histone-derived peptides impede a sufficient mass spectrometry (MS) -based epigenetic analysis since their relatively low m/z due to a high degree of proton addition to peptides would difficult to analyze the resulting complex MS/MS spectra. In order to reduce the degree of protonations, we have developed a new interface, the IVU, in which peptides are ionized under a vaporized organic solvent, and it has demonstrated that the doubly-charged histone-tail H2B peptide, PEPAKSAPAPKKGSKKAVTKAQKK (m/z 1238.243 , +2), has been detected by using the IVU interface and sequenced, which was not detectable before.
Subject headings
- NATURVETENSKAP -- Kemi -- Analytisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Läkemedelskemi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Medicinal Chemistry (hsv//eng)
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