• P-ISSN2233-4203
  • E-ISSN2093-8950

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  • P-ISSN 2233-4203
  • E-ISSN 2093-8950

An anomalous dissociation of protonated cluster ions of DNA guanine-cytosine base-pair

Mass Spectrometry Letters, (P)2233-4203; (E)2093-8950
2011, v.2 no.3, pp.73-75
https://doi.org/10.5478/MSL.2011.2.3.073
Seong Yeonmi (Sogang University)
Han Sang Yun (Korea Research Institute of Standards and Science)
Jo Sung-Chan (Samsung Electronics)
Oh Han Bin (Sogang University)
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Abstract

In the collisionally-activated dissociation of the proton-bound cluster ions of DNA base guanine (G) and cytosine(C), G••H+••C, the abundance of [CH+] ions was found to be higher than that of [GH+] despite the fact that G has a higher protonaffinity than C. This unexpected observation seems to demonstrate another example that the simple kinetic method scheme doesnot work. We suggest that a kinetic factor or detailed dynamics governing the proton transfer and dissociation should be carefullyconsidered in the applications of the kinetic method to the proton affinity measurements.

keywords
Pronton affinity Collisional dissociation Proton transfer Guanine Cytosine


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Seong, Y.. manuscript in preparation.

Submission Date
2011-08-29
Revised Date
2011-09-01
Accepted Date
2011-09-01
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