Identification and biosynthesis of a novel xanthomonadin-dialkylresorcinol-hybrid from Azoarcus sp. BH72.

Identification and biosynthesis of a novel xanthomonadin-dialkylresorcinol-hybrid from Azoarcus sp. BH72.
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DOI:
10.1371/journal.pone.0090922
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发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Bode HB
Bode HB
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Schöner TA;Fuchs SW;Reinhold-Hurek B;Bode HB

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通过饲养实验、HPLC-MS和MALDI-MS分析,在Azoarcus sp. BH 72中鉴定出一种新的黄单胞菌素-二烷基间苯二酚杂合物--核黄素,并报道了编码这种非类异戊二烯芳基多烯色素生物合成的基因簇。从XanB 2型产生3-和4-羟基苯甲酸和AMP-连接酶编码这些基因簇的分支利用酶的特征在于,可能执行的前两个步骤的多烯生物合成。此外,一个详细的分析已经知道的或新的生物合成基因簇参与生物合成的多烯含有色素,如核黄素,flexirubin和xanthomonadin揭示了类似的基因簇的存在下,在广泛的细菌类群,这表明多烯和多烯-二烷基间苯二酚色素比以前认识到的更广泛。
A novel xanthomonadin-dialkylresorcinol hybrid named arcuflavin was identified in Azoarcus sp. BH72 by a combination of feeding experiments, HPLC-MS and MALDI-MS and gene clusters encoding the biosynthesis of this non-isoprenoid aryl-polyene containing pigment are reported. A chorismate-utilizing enzyme from the XanB2-type producing 3- and 4-hydroxybenzoic acid and an AMP-ligase encoded by these gene clusters were characterized, that might perform the first two steps of the polyene biosynthesis. Furthermore, a detailed analysis of the already known or novel biosynthesis gene clusters involved in the biosynthesis of polyene containing pigments like arcuflavin, flexirubin and xanthomonadin revealed the presence of similar gene clusters in a wide range of bacterial taxa, suggesting that polyene and polyene-dialkylresorcinol pigments are more widespread than previously realized.
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