Two distinct mechanisms for TIM barrel prenyltransferases in bacteria.
Two distinct mechanisms for TIM barrel prenyltransferases in bacteria.
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DOI:
10.1021/ja109578b
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发表时间:
2011-02-09
影响因子:
15
通讯作者:
Walker S
中科院分区:
文献类型:
--
作者:
Doud EH;Perlstein DL;Wolpert M;Cane DE;Walker S
The reactions of two bacterial TIM barrel prenyltransferases (PTs), MoeO5 and PcrB, were explored. MoeO5, the enzyme responsible for the first step in moenomycin biosynthesis, catalyzes the transfer of farnesyl to 3-phosphoglyceric acid (3PG) to give a product containing a cis-allylic double bond. We show that this reaction involves isomerization to a nerolidyl pyrophosphate intermediate followed by bond rotation prior to attack by the nucleophile. This mechanism is unprecedented for a prenyltransferase that catalyzes an intermolecular coupling. We also show that PcrB transfers geranyl and geranylgeranyl groups to glycerol-1-phosphate (G1P), making it the first known bacterial enzyme to use G1P as a substrate. Unlike MoeO5, PcrB catalyzes prenyl transfer without isomerization to give products that retain the trans-allylic bond of the prenyl donors. The TIM barrel family of PTs is unique in including enzymes that catalyze prenyl transfer by distinctly different reaction mechanisms.
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影响因子:
4
作者:
Noel, Joseph P.;Dellas, Nikki;Faraldos, Juan A.;Zhao, Marylin;Hess, B. Andes, Jr.;Smentek, Lidia;Coates, Robert M.;O'Maille, Paul E.
通讯作者:
O'Maille, Paul E.
影响因子:
2.9
作者:
Ostash B;Doud EH;Lin C;Ostash I;Perlstein DL;Fuse S;Wolpert M;Kahne D;Walker S
通讯作者:
Walker S
影响因子:
5.1
作者:
CANE, DE;HA, HJ;MURTHY, PPN
通讯作者:
MURTHY, PPN
影响因子:
2.9
作者:
Liang, Po-Huang
通讯作者:
Liang, Po-Huang
DOI:
10.1073/pnas.0601605103
发表时间:
2006-06-27
影响因子:
11.1
作者:
Greenhagen, Bryan T.;O'Maille, Paul E.;Chappell, Joe
通讯作者:
Chappell, Joe