FRAGMENTATION OF DINUCLEOTIDES D(APAP) FOLLOWING K-SHELL IONIZATION OF PHOSPHORUS ATOM BY MONOCHROMATIC SOFT X-RAYS

Authors
FROHLICH H LEMAIRE M GUILLOT F TRONC M COSSET JM LESECH C
Citation
H. Frohlich et al., FRAGMENTATION OF DINUCLEOTIDES D(APAP) FOLLOWING K-SHELL IONIZATION OF PHOSPHORUS ATOM BY MONOCHROMATIC SOFT X-RAYS, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 105(1-4), 1995, pp. 314-317
Citations number
8
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
105
Issue
1-4
Year of publication
1995
Pages
314 - 317
Database
ISI
SICI code
0168-583X(1995)105:1-4<314:FODDFK>2.0.ZU;2-3
Abstract
A dinucleotide: d(ApAp) with molecular formula C70H61N11O15P2Cl2 has b een irradiated with monochromatic soft X-rays tuned to the K shell res onance energy of the phosphorus atom. The photofragments have been ana lysed with an electrospray mass spectrometer. The results suggest that among all the possible electronic relaxation mechanisms, a significan t one involves the scission of the two phosphodiester bonds as a resul t of the multiply charged phosphorus ion produced in the electronic re arrangement following the inner shell excitation or ionization of the phosphorus atom.