Discovery of 3-formyl-tyrosine metabolites from Pseudoalteromonas tunicata through heterologous expression.

Discovery of 3-formyl-tyrosine metabolites from Pseudoalteromonas tunicata through heterologous expression.
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通过异源表达发现从假单胞菌的三甲酰基 - 酪氨酸代谢产物。

DOI:
10.1021/ja9097862
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发表时间:
2010-01-27
影响因子:
15
通讯作者:
Clardy, Jon
Clardy, Jon
中科院分区:
化学1区
文献类型:
--
作者:
Blasiak, Leah C.;Clardy, Jon

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基因组挖掘和天然产物基因簇的鉴定通常依赖于典型非核糖体多肽合成酶(NRPS)或聚酮合酶(PKS)结构域的存在。最近,其他缩合酶,如ATP-抓取连接酶,已被认为是天然产物生物合成的重要参与者。在这项研究中,基于序列的搜索同源物的DdaF,ATP-把握酰胺连接酶从dapdiamide的生物合成,导致识别一个以前未注释的生物合成基因簇在被衣假交替单胞菌。该簇在大肠杆菌中的异源表达允许两个新的3-甲酰酪氨酸代谢产物的产生和结构测定。
Genome mining and identification of natural product gene clusters typically relies on the presence of canonical nonribosomal polypeptide synthetase (NRPS) or polyketide synthase (PKS) domains. Recently, other condensation enzymes, such as the ATP-grasp ligases, have been recognized as important players in natural product biosynthesis. In this study, sequence based searching for homologues of DdaF, the ATP-grasp amide ligase from dapdiamide biosynthesis, led to the identification of a previously unannotated biosynthetic gene cluster in Pseudoalteromonas tunicata. Heterologous expression of the cluster in Escherichia coli allowed for the production and structure determination of two new 3-formyl tyrosine metabolites.
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