Mechanism-based tuning of a LOV domain photoreceptor.
Mechanism-based tuning of a LOV domain photoreceptor.
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DOI:
10.1038/nchembio.210
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发表时间:
2009-11
影响因子:
14.8
通讯作者:
Crane, Brian R.
中科院分区:
文献类型:
--
作者:
Zoltowski, Brian D.;Vaccaro, Brian;Crane, Brian R.
Phototropin-like LOV domains form a cysteinyl-flavin adduct in response to blue light, but show dramatic variation in output signal and the lifetime of the photo-adduct signaling state. Mechanistic studies of the slow-cycling fungal LOV-photoreceptor Vivid reveal the importance of reactive cysteine conformation, flavin electronic environment and solvent accessibility for adduct scission and thermal reversion. Proton inventory, pH-effects, base catalysis and structural studies implicate flavin N5 deprotonation as rate-determining for recovery. Substitutions of active site residues Ile74, Ile85, Met135 and Met165 alter photoadduct lifetimes by over four orders of magnitude in VVD and similar changes in other LOV proteins show analogous effects. Adduct state decay rates also correlate with changes in conformational and oligomeric properties of the protein necessary for signaling. These findings link natural sequence variation of LOV domains to function and provide a means to design broadly reactive light-sensitive probes.
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影响因子:
7.4
作者:
Kasahara, M;Swartz, TE;Briggs, WR
通讯作者:
Briggs, WR
影响因子:
15
作者:
Iwata, T;Tokutomi, S;Kandori, H
通讯作者:
Kandori, H
DOI:
10.1107/s0907444998003254
发表时间:
1998-09-01
期刊:
ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
影响因子:
--
作者:
Brunger, AT;Adams, PD;Warren, GL
通讯作者:
Warren, GL
影响因子:
64.5
作者:
Heintzen, C;Loros, JJ;Dunlap, JC
通讯作者:
Dunlap, JC
影响因子:
56.9
作者:
Froehlich, AC;Liu, Y;Dunlap, JC
通讯作者:
Dunlap, JC