Accession Number : AD0621765

Title :   LIGHT-INDUCED ABSORBANCY CHANGES IN EIMHJELLEN'S RHODOPSEUDOMONAS,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF BIOSCIENCES

Personal Author(s) : Holt,A. S. ; Clayton,Roderick K.

Report Date : 22 APR 1965

Pagination or Media Count : 3

Abstract : Light induced absorbancy changes in Rhodopseudomonas sp. NHTC 133 are analogous to those observed in other photosynthetic bacteria, but all of the features in the light-induced difference spectrum (except those reflecting cytochrome oxidation) are shifted to greater wavelengths. This general shift is consistent with the fact that the bacteriochlorophyll of this organism (BChl b) differs from the usual BChl in that its absorption bands are shifted to greater wavelengths. The singlet excited state of P985 (the counterpart of the P870 of Rhodopseudomonas spheroides) is not an energy sink relative to the major component of BChl b in vivo. The absorption maximum of P985 is at 985 millimicrons, whereas that of CBhl b in vivo is at 1012 millimicrons. (Author)

Descriptors :   (*BACTERIA, ABSORPTION SPECTRA), (*PSEUDOMONADALES, ABSORPTION SPECTRA), (*CHLOROPHYLLS, ABSORPTION SPECTRA), LIGHT, PHOTOSYNTHESIS, BAND SPECTRA, ATOMIC ENERGY LEVELS, EXCITATION, CANADA

Distribution Statement : APPROVED FOR PUBLIC RELEASE