Universal stress protein Rv2624c alters abundance of arginine and enhances intracellular survival by ATP binding in mycobacteria.

Universal stress protein Rv2624c alters abundance of arginine and enhances intracellular survival by ATP binding in mycobacteria.
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通用应激蛋白 Rv2624c 改变分枝杆菌中精氨酸的丰度并通过 ATP 结合增强细胞内存活

DOI:
10.1038/srep35462
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发表时间:
2016-10-20
期刊:
影响因子:
4.6
通讯作者:
Zhu G
Zhu G
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Jia Q;Hu X;Shi D;Zhang Y;Sun M;Wang J;Mi K;Zhu G

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通用应激蛋白家族是应激诱导蛋白家族。通用应激蛋白影响分枝杆菌的潜伏期和抗生素耐药性。在这里,我们发现耻垢分枝杆菌表达M.结核杆菌应激蛋白Rv 2624 c在人单核细胞THP-1细胞中表现出增加的存活。转录组分析表明Rv 2624 c影响组氨酸代谢以及精氨酸和脯氨酸代谢。LC-MS/MS分析显示Rv 2624 c影响精氨酸的丰度,精氨酸是分枝杆菌和感染的THP-1细胞的调节剂。生化分析表明,Rv 2624 c是一个核苷酸结合的通用应激蛋白,和Rv 2624 c突变体不能结合ATP废除THP-1细胞的生长优势。因此,Rv 2624 c可能以ATP依赖性方式调节代谢途径,改变精氨酸的丰度,从而增加THP-1细胞的存活率。
The universal stress protein family is a family of stress-induced proteins. Universal stress proteins affect latency and antibiotic resistance in mycobacteria. Here, we showed thatMycobacterium smegmatisoverexpressingM. tuberculosisuniversal stress protein Rv2624c exhibits increased survival in human monocyte THP-1 cells. Transcriptome analysis suggested that Rv2624c affects histidine metabolism, and arginine and proline metabolism. LC-MS/MS analysis showed that Rv2624c affects the abundance of arginine, a modulator of both mycobacteria and infected THP-1 cells. Biochemical analysis showed that Rv2624c is a nucleotide-binding universal stress protein, and an Rv2624c mutant incapable of binding ATP abrogated the growth advantage in THP-1 cells. Rv2624c may therefore modulate metabolic pathways in an ATP-dependent manner, changing the abundance of arginine and thus increasing survival in THP-1 cells.
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