The major carotenoid pigment of a psychrotrophic Micrococcus roseus strain: fluorescence properties of the pigment and its binding to membranes

Biochemical and Biophysical Research Communications
M V JagannadhamS Shivaji

Abstract

The fluorescence excitation and emission spectra are reported for P-3 (bis-dehydro-B-carotene-2-carboxylic acid), the major carotenoid pigment of psychrotrophic M. roseus. The excitation spectrum and the absorption spectrum showed good agreement with respect to the position of their peak maxima. The study also demonstrates that P-3 binds to liposomes prepared from synthetic lipids (PC, DOPG, or CL) or the total lipids of a mutant colourless M. roseus. Binding of P-3 to the membranes was accompanied by a decrease in the fluorescence emission intensity and a blue shift in lambda(em) maximum by 15 to 20 nm. The quantum yield of P-3 was observed to be low (1.7 x 10(-5)).

Citations

May 12, 2009·Applied and Environmental Microbiology·Ashish K SinghS Shivaji
Jun 9, 2004·Applied and Environmental Microbiology·Matthias ArenskötterAlexander Steinbüchel
Mar 16, 2012·Journal of Proteomics·Medicharla Venkata Jagannadham, Chiranjit Chowdhury
Nov 30, 2016·International Journal of Immunopathology and Pharmacology·Hossein RostamiMahmoud Yolmeh
Jan 6, 2010·Archives of Microbiology·S Shivaji, Jogadhenu S S Prakash
Dec 29, 2000·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·B J Pogson, H M Rissler

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