Mechanistic diversity in the RuBisCO superfamily: a novel isomerization reaction catalyzed by the RuBisCO-like protein from Rhodospirillum rubrum.
Mechanistic diversity in the RuBisCO superfamily: a novel isomerization reaction catalyzed by the RuBisCO-like protein from Rhodospirillum rubrum.
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DOI:
10.1021/bi801685f
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发表时间:
2008-10-28
期刊:
影响因子:
2.9
通讯作者:
Gerlt, John A.
中科院分区:
文献类型:
--
作者:
Imker, Heidi J.;Singh, Jaya;Warlick, Benjamin P.;Tabita, F. Robert;Gerlt, John A.
Some homologues of D-ribulose 1,5-bisphosphate carboxylase/oxygenase (RuBisCO) do not catalyze carboxylation and are designated RuBisCO-like proteins (RLPs). The RLP from Rhodospirillum rubrum (gi:83593333) catalyzes a novel isomerization reaction (overall 1,3-proton transfer reaction; likely, two 1,2-proton transfer reactions) that converts 5-methylthio-D-ribulose 1-phosphate to a 3:1 mixture of 1-methylthio-xylulose 5-phosphate and 1-methylthioribulose 5-phosphate. Disruption of the gene encoding the RLP abolishes the ability of R. rubrum to utilize 5′-methylthioadenosine as sole sulfur source, implicating a new, as yet uncharacterized, pathway for sulfur salvage.
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影响因子:
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作者:
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通讯作者:
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