Hole burning study of CP 34 pigment protein of iron-deprived cyanobacterium Synechococcus elongatus

Persistent hole burning results obtained with the isolated chlorophyll-bind ing protein CP 34 induced under Fe stress in the cyanobacterium Synechococc us elongatus are presented. Excited state lifetimes were determined from ze ro phonon hole widths while chlorophyll-protein coupling was characterised from phonon side-band holes and inhomogeneously broadened function. Compari son of these values to those obtained previously with other chlorophyll-pro tein complexes from the same cyanobacterium supports an antenna role as wel l as chlorophyll-storage function of CP 34 in Fe limited cyanobacteria. (C) 2000 Elsevier Science B.V. All rights reserved.