Salvage of the 5-deoxyribose byproduct of radical SAM enzymes.
Salvage of the 5-deoxyribose byproduct of radical SAM enzymes.
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DOI:
10.1038/s41467-018-05589-4
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发表时间:
2018-08-06
影响因子:
16.6
通讯作者:
Hanson AD
中科院分区:
文献类型:
--
作者:
Beaudoin GAW;Li Q;Folz J;Fiehn O;Goodsell JL;Angerhofer A;Bruner SD;Hanson AD
5-Deoxyribose is formed from 5′-deoxyadenosine, a toxic byproduct of radical S-adenosylmethionine (SAM) enzymes. The degradative fate of 5-deoxyribose is unknown. Here, we define a salvage pathway for 5-deoxyribose in bacteria, consisting of phosphorylation, isomerization, and aldol cleavage steps. Analysis of bacterial genomes uncovers widespread, unassigned three-gene clusters specifying a putative kinase, isomerase, and sugar phosphate aldolase. We show that the enzymes encoded by the Bacillus thuringiensis cluster, acting together in vitro, convert 5-deoxyribose successively to 5-deoxyribose 1-phosphate, 5-deoxyribulose 1-phosphate, and dihydroxyacetone phosphate plus acetaldehyde. Deleting the isomerase decreases the 5-deoxyribulose 1-phosphate pool size, and deleting either the isomerase or the aldolase increases susceptibility to 5-deoxyribose. The substrate preference of the aldolase is unique among family members, and the X-ray structure reveals an unusual manganese-dependent enzyme. This work defines a salvage pathway for 5-deoxyribose, a near-universal metabolite. 5-Deoxyribose is formed from 5′-deoxyadenosine, a toxic byproduct of radical S-adenosylmethionine enzymes. Here, the authors identify and biochemically characterize a bacterial salvage pathway for 5-deoxyribose, consisting of three enzymes, and solve the crystal structure of the key aldolase.
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DOI:
10.1007/bf00325702
发表时间:
1987-12-01
期刊:
MOLECULAR AND GENERAL GENETICS
影响因子:
--
作者:
CHEN, YM;ZHU, Y;LIN, ECC
通讯作者:
LIN, ECC
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
--
作者:
Choi-Rhee, EJ;Cronan, JE
通讯作者:
Cronan, JE
影响因子:
14.9
作者:
Chen IA;Markowitz VM;Chu K;Palaniappan K;Szeto E;Pillay M;Ratner A;Huang J;Andersen E;Huntemann M;Varghese N;Hadjithomas M;Tennessen K;Nielsen T;Ivanova NN;Kyrpides NC
通讯作者:
Kyrpides NC
影响因子:
5.6
作者:
Higgins, Melanie A.;Suits, Michael D.;Boraston, Alisdair B.
通讯作者:
Boraston, Alisdair B.