Photosensitivity in sponge due to cytochrome c oxidase?
An action spectrum for photosensitivity in sponge larvae published by Leys et al. [J. Comp. Physiol., A, 2002, 188, 199-202] was interpreted by the authors as being due to a combination of light absorption by flavin or carotenoid in the blue region, and another pigment such as pterin in the long-wavelength region. Here we show here that their action spectrum closely matches the absorption spectrum of reduced cytochrome c oxidase that is present in sponges, and compare with other photoreactions which are thought to be due to this chromoprotein.
Björn
Lars Olof
LO
Department of Cell and Organism Biology, Lund University, 223 62 Lund, Sweden. Lars_Olof.Bjorn@cob.lu.se
Rasmusson
Allan G
AG
D000042:Absorption; D000595:Amino Acid Sequence; D000818:Animals; D002417:Cattle; D003576:Electron Transport Complex IV / Q000737:chemistry / Q000378:metabolism*; D007814:Larva / Q000201:enzymology / Q000528:radiation effects; D008027:Light; D008969:Molecular Sequence Data; D011161:Porifera / Q000201:enzymology* / Q000528:radiation effects*; D016415:Sequence Alignment
D003576:Electron Transport Complex IV