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@ARTICLE{Guo:49345,
author = {Guo, H. and Kottke, T. and Hegemann, P. and Dick, B.},
title = {{T}he {P}hot {LOLV}2 {D}omain and its {I}nteraction with
{LOV}1},
journal = {Biophysical journal},
volume = {89},
issn = {0006-3495},
address = {New York, NY},
publisher = {Rockefeller Univ. Press},
reportid = {PreJuSER-49345},
pages = {402 - 412},
year = {2005},
note = {Record converted from VDB: 12.11.2012},
abstract = {Phot proteins are homologs of the blue-light receptor
phototropin. We report a comparative study of the
photocycles of the isolated, light-sensitive domains LOV1
and LOV2 from Chlamydomonas reinhardtii phot protein, as
well as the construct LOV1/2 containing both domains.
Transient absorption measurements revealed a short lifetime
of the LOV2-wt triplet state (500 ns), but a long lifetime
(287 micros) of the triplet in the mutant LOV2-C250S, in
which the reactive cysteine is replaced by serine. For LOV1,
in comparison, corresponding numbers of 800 ns and 4 micros
for the two conformers in LOV1-wt, and 27 micros for
LOV1-C57S have been reported. The triplet decay kinetics in
the mixed domains LOV1/2-wt, LOV1/2-C57S, and LOV1/2-C250S
can be analyzed as the superposition of the behavior of the
corresponding single domains. The situation is different for
the slow, thermal reaction of the photoadduct back to the
dark form. Whereas the individual domains LOV1 and LOV2 show
two decay components, the double domains LOV1/2-C57S and
LOV1/2-C250S both show only a single component. The
interaction of the two domains does therefore not manifest
itself during the lifetime of the triplet states, but
changes the decay behavior of the adduct states.},
keywords = {Animals / Anions / Cations / Chlamydomonas reinhardtii:
metabolism / Cryptochromes / Cysteine: chemistry / DNA
Adducts / Flavoproteins: chemistry / Hot Temperature /
Hydrogen-Ion Concentration / Ions / Kinetics / Light /
Models, Chemical / Mutation / Photons / Photoreceptor Cells,
Invertebrate: chemistry / Protein Binding / Protein
Structure, Tertiary / Serine: chemistry / Sodium Chloride:
pharmacology / Spectrophotometry / Temperature / Time
Factors / Anions (NLM Chemicals) / Cations (NLM Chemicals) /
Cryptochromes (NLM Chemicals) / DNA Adducts (NLM Chemicals)
/ Flavoproteins (NLM Chemicals) / Ions (NLM Chemicals) /
Cysteine (NLM Chemicals) / Serine (NLM Chemicals) / Sodium
Chloride (NLM Chemicals) / J (WoSType)},
cin = {IBI-2},
ddc = {570},
cid = {I:(DE-Juel1)VDB58},
pnm = {Neurowissenschaften},
pid = {G:(DE-Juel1)FUEK255},
shelfmark = {Biophysics},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:15879473},
pmc = {pmc:PMC1366540},
UT = {WOS:000230114500043},
doi = {10.1529/biophysj.104.058230},
url = {https://juser.fz-juelich.de/record/49345},
}