Gene Cluster of Arthrobacter ilicis Rü61a Involved in the Degradation of Quinaldine to Anthranilate

Gene Cluster of Arthrobacter ilicis Rü61a Involved in the Degradation of Quinaldine to Anthranilate
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髂节杆菌Rü61a基因簇参与喹哪啶降解为邻氨基苯甲酸盐

DOI:
10.1074/jbc.m301330200
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发表时间:
2003
影响因子:
4.8
通讯作者:
S. Fetzner
S. Fetzner
中科院分区:
生物学2区
文献类型:
--
作者:
K. Parschat;B. Hauer;R. Kappl;R. Kraft;J. Hüttermann;S. Fetzner

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对喹那定降解的邻氨基苯甲酸途径进行了遗传分析。将伊氏节杆菌Rü61a的23kb片段克隆到粘粒pVK100中。虽然含有重组粘粒的大肠杆菌克隆不能转化喹那定,但含有23kb区域或该区域10.8kb片段的粘粒赋予恶臭假单胞菌KT2440将奎那定共代谢转化为邻氨基苯甲酸酯的能力。因此,10.8kb的片段包含编码喹啉4-氧化酶(QOX)、1H-4-氧代喹啉3-单加氧酶、1H-3-羟基-4-氧喹啉2,4-双加氧酶和N-乙酰邻氨基苯甲酸酰胺酶的基因。将含有胞嘧啶钼二核苷酸(MCD-)、FeSI-、FeSII-和FAD的qoxLMS基因插入到表达载体pJB653中,产生pKP1。QOX是第一个由异源宿主恶臭假单胞菌KT2440 pKP1以完全催化活性形式合成的含MCD的酶,从恶臭假单胞菌KT2440 pKP1中纯化得到的QOX的催化性质、紫外可见光谱和电子顺磁共振谱与野生型QOX基本相似。这为通过定点突变构建QOX蛋白变异体提供了起点。在qoxLMS基因下游有一个推测的基因,其推导的氨基酸序列与插入辅因子的伴侣蛋白XdhC有37%的相似性。在23kb的片段上发现的额外的开放阅读框可能编码更多的酶(一个谷氨酰tRNA合成酶,一个酯酶,两个短链脱氢酶/还原酶,一个属于aaa家族的ATPase,一个2-羟基庚烯-2,4-二烯-1,7-二酸isomerase/5-oxopent-3-ene-1,2,5-tricarboxylate脱羧酶类蛋白,和一个扁桃酸外消旋酶组的酶),以及参与转录调控和代谢物运输的假想蛋白。
A genetic analysis of the anthranilate pathway of quinaldine degradation was performed. A 23-kb region of DNA from Arthrobacter ilicis Rü61a was cloned into the cosmid pVK100. Although Escherichia coli clones containing the recombinant cosmid did not transform quinaldine, cosmids harboring the 23-kb region, or a 10.8-kb stretch of this region, conferred to Pseudomonas putida KT2440 the ability to cometabolically convert quinaldine to anthranilate. The 10.8-kb fragment thus contains the genes coding for quinaldine 4-oxidase (Qox), 1H-4-oxoquinaldine 3-monooxygenase, 1H-3-hydroxy-4-oxoquinaldine 2,4-dioxygenase, and N-acetylanthranilate amidase. The qoxLMS genes coding for the molybdopterin cytosine dinucleotide-(MCD-), FeSI-, FeSII-, and FAD-containing Qox were inserted into the expression vector pJB653, generating pKP1. Qox is the first MCD-containing enzyme to be synthesized in a catalytically fully competent form by a heterologous host, P. putida KT2440 pKP1; the catalytic properties and the UV-visible and EPR spectra of Qox purified from P. putida KT2440 pKP1 were essentially like those of wild-type Qox. This provides a starting point for the construction of protein variants of Qox by site-directed mutagenesis. Downstream of the qoxLMS genes, a putative gene whose deduced amino acid sequence showed 37% similarity to the cofactor-inserting chaperone XdhC was located. Additional open reading frames identified on the 23-kb segment may encode further enzymes (a glutamyl tRNA synthetase, an esterase, two short-chain dehydrogenases/reductases, an ATPase belonging to the AAA family, a 2-hydroxyhepta-2,4-diene-1,7-dioate isomerase/5-oxopent-3-ene-1,2,5-tricarboxylate decarboxylase-like protein, and an enzyme of the mandelate racemase group) and hypothetical proteins involved in transcriptional regulation, and metabolite transport.
2.8-A 来自链霉菌 R61 的青霉素敏感性 D-丙氨酰羧肽酶-转肽酶及其与 β-内酰胺的复合物的结构。
DOI: --
发表时间: 1985
期刊: The Journal of biological chemistry
影响因子: --
作者:
Kelly,JA;Knox,JR;Moews,PC;Hite,GJ;Bartolone,JB;Zhao,H;Joris,B;Frère,JM;Ghuysen,JM
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DOI: 10.1101/gr.9.1.27
发表时间: 1999-01
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影响因子: 7
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DOI: 10.1073/pnas.94.14.7233
发表时间: 1997-07-08
影响因子: 11.1
作者:
Chaiyen, PC;Ballou, DP;Massey, V
通讯作者: Massey, V
DOI: 10.1073/pnas.95.18.10396
发表时间: 1998-09-01
影响因子: 11.1
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通讯作者: Ringe, D
DOI: 10.1006/abio.1996.0171
发表时间: 1996-05-01
影响因子: 2.9
作者:
Zor, T;Seliger, Z
通讯作者: Seliger, Z