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Volumn 15, Issue 2, 2009, Pages 352-360

Electrospray-ionization mass spectrometry for screening the specificity and stability of single-stranded-DNA templated self-assemblies

Author keywords

Mass spectrometry; Nucleic acids; Self assembly; Supramolecular chemistry; Templates

Indexed keywords

DNA; ELECTROSPRAY IONIZATION; GENES; HYDROGEN; HYDROGEN BONDS; IONIZATION; IONIZATION OF GASES; MACROMOLECULES; MASS SPECTROMETERS; MASS SPECTROMETRY; MOLECULES; NUCLEIC ACIDS; ORGANIC ACIDS; SELF ASSEMBLY; SPECTROMETERS; SPECTROMETRY; SPECTRUM ANALYSIS; SUPRAMOLECULAR CHEMISTRY;

EID: 58449129945     PISSN: 09476539     EISSN: 15213765     Source Type: Journal    
DOI: 10.1002/chem.200801506     Document Type: Article
Times cited : (17)

References (72)
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    • See the Supporting Information
    • See the Supporting Information.
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    • In the positive mode, the guest molecules can easily be detected
    • In the positive mode, the guest molecules can easily be detected.
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    • Note that quantitative values for guest-binding equilibrium constants cannot be obtained from these ESI-MS experiments because the free-guest concentration is not linear with the intensity of [G-H]1- and most of the complexes are partially dissociated, even at low acceleration voltages
    • 1- and most of the complexes are partially dissociated, even at low acceleration voltages.
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    • Note that the intensities of the peaks of the spectra in Figures 2c and 3 differ, which is presumably due to the slightly different argon pressure in the collision cell.
    • Note that the intensities of the peaks of the spectra in Figures 2c and 3 differ, which is presumably due to the slightly different argon pressure in the collision cell.
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    • For the original mass spectra, see the Supporting Information
    • For the original mass spectra, see the Supporting Information.
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    • With CD spectroscopy, all of the dTn-G1 mixtures showed a Cotton effect in the region in which only G1 absorbs. None of the other homo-ssDNA strands showed a Cotton effect in the G1 absorption region. See the Supporting Information
    • With CD spectroscopy, all of the dTn-G1 mixtures showed a Cotton effect in the region in which only G1 absorbs. None of the other homo-ssDNA strands showed a Cotton effect in the G1 absorption region. See the Supporting Information.
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    • Similar results have been obtained for G2, G3, and G4 in combination with dT5 and dT20; see the Supporting Information.
    • Similar results have been obtained for G2, G3, and G4 in combination with dT5 and dT20; see the Supporting Information.
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    • The dT20-G1 complex peaks that appeared between m/z values of 750 and 1750 Da are no longer present, which indicates that the supramolecular strand of G1 is replaced by the dA20 strand. Also, no complex peaks are present in the deconvoluted spectrum and it now mainly contains a dA20 peak, and a very small dT20 peak. Although some peaks are the double-stranded dT20-dA20 peaks, they could not be deconvoluted. It should be noted that dT20-dA20 can polymerize into high-molecular-weight dsDNA; this makes the detection of dT20-dA20 a lot harder.
    • The dT20-G1 complex peaks that appeared between m/z values of 750 and 1750 Da are no longer present, which indicates that the supramolecular strand of G1 is replaced by the dA20 strand. Also, no complex peaks are present in the deconvoluted spectrum and it now mainly contains a dA20 peak, and a very small dT20 peak. Although some peaks are the double-stranded dT20-dA20 peaks, they could not be deconvoluted. It should be noted that dT20-dA20 can polymerize into high-molecular-weight dsDNA; this makes the detection of dT20-dA20 a lot harder.
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    • Another proof for the involvement of the amine protons in binding to the template is an experiment in which the amine protons of the diaminotriazine of G1. were replaced with deuterium atoms by using D2O as a solvent instead of H2O. The mass found for the breakdown product of the G1(D4)-dT10 complexes corresponds to the [G1(D4)-D]1- peak. See the Supporting Information
    • 1- peak. See the Supporting Information,
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    • For the same experiment with dT5, see the Supporting Information.
    • For the same experiment with dT5, see the Supporting Information.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.