Ontology highlight
ABSTRACT:
SUBMITTER: Paddock ML
PROVIDER: S-EPMC2156152 | biostudies-literature | 2007
REPOSITORIES: biostudies-literature
Paddock M L ML Isaacson R A RA Abresch E C EC Okamura M Y MY
Applied magnetic resonance 20070101 1-2
Photosynthetic reaction centers (RCs) from Rhodobacter sphaeroides capture solar energy by electron transfer from primary donor, D, to quinone acceptor, Q(B,) through the active A-branch of electron acceptors, but not the inactive B-branch. The light induced EPR spectrum from native RCs that had Fe(2+) replaced by Zn(2+) was investigated at cryogenic temperature (80K, 35 GHz). In addition to the light induced signal due to formation of D(+•)Q(A) (-•) observed previously, a small fraction (~5%) o ...[more]