Fluorescence emission, energy transfer and structure of pliycobílisomes from NostocflagelUforme Born. et Flah. during dissociation

Title:

Fluorescence emission, energy transfer and structure of pliycobílisomes from NostocflagelUforme Born. et Flah. during dissociation

Creator:

Lu, Rong-zhao and Liu, Bin

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:0e727ffb-27a1-4955-822a-1ed977e8fa8e
uuid:0e727ffb-27a1-4955-822a-1ed977e8fa8e
urnnbn:urn:nbn:cz:aba007-000fdz

Type:

model:internalpart and TEXT

Format:

print

Description:

Changes in fluorescence emission spectra (293 and 77 K) of phycobilisomes from Nostoc flagelUforme during dissociation in phosphate buffer of various molarity were studied. There were three bands in 77 K fluorescence emission spectra of partly dissociated phycobilisomes: F648, F666 and F686, characteristic of C-phycocyanin (C-PC), allophycocyanin (APC) and allophycocyanin-B (APC-B), respectively. In severely dissociated phycobilisomes, the F666 band was veiy weak, which indicated that linkage between C-PC and APC was severely dissociated, most of the energy trapped by C-PC could not be transferred to APC, but some of it could be transferred directly to APC-B. The phycobiliproteins in these phycobilisomes constitute an energy transfer chain: PEC^C;PC-»APC-»AP^-B. A new model of phycobilisome structure is suggested, in which some C-PC contact directly with APC and others contact with APC-B.

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

253-258 and 95-100

Source:

Photosynthetica | 1993 Volume:28 | Number:2

Harvested from:

CDK

Metadata only:

false