Radical-mediated enzymatic carbon chain fragmentation-recombination.
Radical-mediated enzymatic carbon chain fragmentation-recombination.
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自由基介导的酶促碳链断裂重组
DOI:
10.1038/nchembio.512
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发表时间:
2011-03
影响因子:
14.8
通讯作者:
Liu, Wen
中科院分区:
文献类型:
--
作者:
Zhang, Qi;Li, Yuxue;Chen, Dandan;Yu, Yi;Duan, Lian;Shen, Ben;Liu, Wen
The radicalS-adenosylmethionine (S-AdoMet) superfamily contains thousands of proteins that catalyze highly diverse conversions, most of which are poorly understood, owing to a lack of information regarding chemical products and radical-dependent transformations. We here report that NosL, involved in forming the indole side ring of the thiopeptide nosiheptide (NOS), is a radicalS-AdoMet 3-methyl-2-indolic acid (MIA) synthase. NosL catalyzed an unprecedented carbon chain reconstitution ofL-tryptophan to give MIA, showing removal of the Cα-N unit and shift of the carboxylate to the indole ring. Dissection of the enzymatic process upon the identification of products and a putative glycyl intermediate uncovered a radical-mediated, unusual fragmentation-recombination reaction. This finding unveiled a key step in radicalS-AdoMet enzyme–catalyzed structural rearrangements during complex biotransformations. Additionally, NosL tolerated fluorinatedL-tryptophan as the substrate, allowing for production of a regiospecifically halogenated thiopeptide that has not been found among the more than 80 members of the naturally occurring thiopeptide family.
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影响因子:
16.6
作者:
Driesener, Rebecca C.;Challand, Martin R.;Roach, Peter L.
通讯作者:
Roach, Peter L.
影响因子:
14.8
作者:
Chatterjee, Abhishek;Li, Yue;Zhang, Yang;Grove, Tyler L.;Lee, Michael;Krebs, Carsten;Booker, Squire J.;Begley, Tadhg P.;Ealick, Steven E.
通讯作者:
Ealick, Steven E.
影响因子:
15
作者:
Morris, Rowan P.;Leeds, Jennifer A.;Krastel, Philipp
通讯作者:
Krastel, Philipp
DOI:
10.1073/pnas.0900008106
发表时间:
2009-02-24
影响因子:
11.1
作者:
Brown, Laura C. Wieland;Acker, Michael G.;Fischbach, Michael A.
通讯作者:
Fischbach, Michael A.
影响因子:
15
作者:
Acker, Michael G.;Bowers, Albert A.;Walsh, Christopher T.
通讯作者:
Walsh, Christopher T.