Designing Light-Activated Charge-Separating Proteins with a Naphthoquinone Amino Acid.

Designing Light-Activated Charge-Separating Proteins with a Naphthoquinone Amino Acid.
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DOI:
10.1002/anie.201507094
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发表时间:
2015-11-09
影响因子:
16.6
通讯作者:
Moser, Christopher C.
Moser, Christopher C.
中科院分区:
化学1区
文献类型:
--
作者:
Lichtenstein, Bruce R.;Bialas, Chris;Cerda, Jose F.;Fry, Bryan A.;Dutton, P. Leslie;Moser, Christopher C.

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The first principles design of manmade redox-protein maquettes is used to clarify the physical/chemical engineering supporting the mechanisms of natural enzymes with a view to recapitulate and surpass natural performance. Herein, we use intein-based protein semisynthesis to pair a synthetic naphthoquinone amino acid (Naq) with histidineligated photoactive metal–tetrapyrrole cofactors, creating a 100 μs photochemical charge separation unit akin to photosynthetic reaction centers. By using propargyl groups to protect the redox-active para-quinone during synthesis and assembly while permitting selective activation, we gain the ability to employ the quinone amino acid redox cofactor with the full set of natural amino acids in protein design. Direct anchoring of quinone to the protein backbone permits secure and adaptable control of intraprotein electron-tunneling distances and rates.
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