Photobilirubin: an early bilirubin photoproduct detected by absorbance difference spectroscopy.
AUTOR(ES)
Lightner, D A
RESUMO
Absorption of light converts bilirubin-IXalpha in solution to a mixture of what are probably cis-trans geometric isomers. This reaction is much faster than other photochemical reactions of bilirubin and reaches photoequilibrium before losses due to photooxidation are significant. At room temperature in the dark in the presence of trifluoroacetic acid or iodine or simply on standing, the photoproducts revert to the natural isomer. They also revert under visible light. Their formation and reversion can be followed by chromatography on polyamide and by absorbance difference spectroscopy.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=382869Documentos Relacionados
- The structure of nucleosome core particles as revealed by difference Raman spectroscopy.
- Measurement of bilirubin, cholesterol and creatinine in serum and plasma, by solid-phase reflectance spectroscopy.
- Protein-heme interaction in hemoglobin: evidence from Raman difference spectroscopy.
- Protein influence on the heme in cytochrome c: evidence from Raman difference spectroscopy.
- Magnetic resonance spectroscopy.