Literature DB >> 4370226

Nuclear coupling of 33S and the nature of free radicals in irradiated crystals of cystine dihydrochloride.

J H Hadley, W Gordy.   

Abstract

The (33)S hyperfine structure has been observed and analyzed in the electron spin resonance of gamma-irradiated single crystals of cystine dihydrochloride at 77 degrees K and at room temperature. The radicals observed at room temperature and previously assigned as RCH(2)S are proved to be disulfide radicals, RCH(2)SS. However, the RCH(2)S radical is identified by the (33)S measurements in samples irradiated at 77 degrees K, annealed at 200 degrees K, and observed at 77 degrees K. This monosulfide radical appears to undergo reactions to form disulfide radicals at room temperature.

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Year:  1974        PMID： 4370226      PMCID： PMC388630          DOI： 10.1073/pnas.71.8.3106

Source DB:  PubMed          Journal:  Proc Natl Acad Sci U S A        ISSN： 0027-8424            Impact factor:   11.205


  2 in total

1.  [Electron paramagnetic resonance spectra of non-oriented free radicals of sulfur-containing amino acids].

Authors:  S N Dobriakov; V G Krivenko; M K Pulatova; E N Sud'bina
Journal:  Biofizika       Date:  1973 Mar-Apr

2.  [Photochemical transformations of paramagnetic centers in a gamma-irradiated monocrystal of L-cystine dihydrochloride].

Authors:  V G Krivenko; L P Kaiushin; M K Pulatova
Journal:  Biofizika       Date:  1969 Jul-Aug
  2 in total
  4 in total

1.  Investigations on radical formation and inactivation of suspended trypsin after gamma-irradiation.

Authors:  H W Nemec; H Mönig
Journal:  Radiat Environ Biophys       Date:  1977-07-29       Impact factor: 1.925

2.  Nuclear coupling of 33S and the nature of free radicals in irradiated crystals of N-acetyl-L-cysteine.

Authors:  J H Hadley; W Gordy
Journal:  Proc Natl Acad Sci U S A       Date:  1977-01       Impact factor: 11.205

3.  Nuclear coupling of 33S and the nature of free radicals in irradiated crystals of cystine dihydrochloride: Part II, charged radicals.

Authors:  J H Hadley; W Gordy
Journal:  Proc Natl Acad Sci U S A       Date:  1974-11       Impact factor: 11.205

4.  Nuclear coupling of 33S and the nature of free radicals in irradiated crystals of cysteine hydrochloride and N-acetyl methionine.

Authors:  J H Hadley; W Gordy
Journal:  Proc Natl Acad Sci U S A       Date:  1975-09       Impact factor: 11.205
  4 in total

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