Non-coding nucleotides and amino acids near the active site regulate peptide deformylase expression and inhibitor susceptibility in Chlamydia trachomatis.

Non-coding nucleotides and amino acids near the active site regulate peptide deformylase expression and inhibitor susceptibility in Chlamydia trachomatis.
复制标题

DOI:
10.1099/mic.0.049668-0
复制
发表时间:
2011-09
期刊:
Microbiology (Reading, England)
影响因子:
--
通讯作者:
Fan H
Fan H
中科院分区:
其他
文献类型:
--
作者:
Bao X;Pachikara ND;Oey CB;Balakrishnan A;Westblade LF;Tan M;Chase T;Nickels BE;Fan H

文献摘要

参考文献

被引文献

相似文献

沙眼衣原体是一种专性胞内细菌,是一种高度流行的人类病原体。基于异羟肟酸的基质金属蛋白酶抑制剂在体外和体内都能有效地抑制病原体,并显示出治疗潜力。在这里,我们提供的基因组测序数据表明,多肽变形酶(PDF)是该生物体中抑制剂的唯一靶点。我们进一步报道了控制衣原体PDF(CPDF)表达和抑制效率的分子机制。特别是,我们确定了依赖于σ66的启动子,它控制着cPDF基因的表达,并证明了该启动子中的点突变通过增加cPDF转录而导致抗性。此外,我们还发现,酶活性部位附近的两个氨基酸的取代改变了酶的动力学和蛋白质的稳定性。
Chlamydia trachomatis, an obligate intracellular bacterium, is a highly prevalent human pathogen. Hydroxamic-acid-based matrix metalloprotease inhibitors can effectively inhibit the pathogen both in vitro and in vivo, and have exhibited therapeutic potential. Here, we provide genome sequencing data indicating that peptide deformylase (PDF) is the sole target of the inhibitors in this organism. We further report molecular mechanisms that control chlamydial PDF (cPDF) expression and inhibition efficiency. In particular, we identify the σ66-dependent promoter that controls cPDF gene expression and demonstrate that point mutations in this promoter lead to resistance by increasing cPDF transcription. Furthermore, we show that substitution of two amino acids near the active site of the enzyme alters enzyme kinetics and protein stability.
DOI: 10.1126/science.282.5389.754
发表时间: 1998-10-23
期刊: SCIENCE
影响因子: 56.9
作者:
Stephens, RS;Kalman, S;Davis, RW
通讯作者: Davis, RW
DOI: 10.1073/pnas.120163297
发表时间: 2000-06-06
影响因子: 11.1
作者:
Datsenko, KA;Wanner, BL
通讯作者: Wanner, BL
DOI: 10.1016/s1097-2765(03)00201-6
发表时间: 2003-06-01
期刊: MOLECULAR CELL
影响因子: 16
作者:
Chen, H;Tang, H;Ebright, RH
通讯作者: Ebright, RH
DOI: 10.1002/j.1460-2075.1994.tb06335.x
发表时间: 1994-02-15
期刊: EMBO JOURNAL
影响因子: 11.4
作者:
MAZEL, D;POCHET, S;MARLIERE, P
通讯作者: MARLIERE, P
DOI: 10.1006/abbi.2000.1854
发表时间: 2000-07-01
影响因子: 3.9
作者:
Shen, L;Shi, Y;Zhang, YX
通讯作者: Zhang, YX