A New Facet of Vitamin B(12): Gene Regulation by Cobalamin-Based Photoreceptors.
A New Facet of Vitamin B(12): Gene Regulation by Cobalamin-Based Photoreceptors.
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DOI:
10.1146/annurev-biochem-061516-044500
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发表时间:
2017-06-20
影响因子:
16.6
通讯作者:
Elías-Arnanz M
中科院分区:
文献类型:
--
作者:
Padmanabhan S;Jost M;Drennan CL;Elías-Arnanz M
Living organisms sense and respond to light, a crucial environmental factor, using photoreceptors, which rely on bound chromophores such as retinal, flavins or linear tetrapyrroles for light sensing. The discovery of photoreceptors that sense light using 5′-deoxyadenosylcobalamin, a form of vitamin B12 that is best known as an enzyme cofactor, has expanded the number of known photoreceptor families and unveiled a new biological role of this vitamin. The prototype of these B12-dependent photoreceptors, CarH, is widespread in bacteria and mediates light-dependent gene regulation in a photoprotective cellular response. CarH activity as a transcription factor relies on the modulation of its oligomeric state by 5′-deoxyadenosylcobalamin and light. This review surveys current knowledge about these B12-dependent photoreceptors, their distribution and mode of action, and the structural and photochemical basis of how they orchestrate signal transduction and control gene expression.
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影响因子:
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作者:
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DOI:
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DOI:
10.1111/j.1432-1033.1995.238_1.x
发表时间:
1995-10-01
期刊:
EUROPEAN JOURNAL OF BIOCHEMISTRY
影响因子:
--
作者:
BOTELLA, JA;MURILLO, FJ;RUIZVAZQUEZ, R
通讯作者:
RUIZVAZQUEZ, R