Characterization of thermostable deblocking aminopeptidases of archaeon Thermococcus onnurineus NA1 by proteomic and biochemical approaches.
[No authors listed]
摘要
Thermococcus onnurineus NA1 is a hyperthermophilic archaeon that grows optimally at >80°C. The deblocking aminopeptidase (DAP) (TNA1-DAP1) encoded in Ton_1032 of T. onnurineus NA1 is considered a major DAP. However, four genes encoding putative DAP have been identified from a genomic analysis of T. onnurineus NA1. A proteomic analysis revealed that all four DAPs were differentially induced in YPS culture medium and, particularly, two DAPs (TNA1-DAP1 and TNA1-DAP2) were dominantly expressed in T. onnurineus NA1. The biochemical properties and enzyme activity of DAPs induced in an E. coli expression system suggested that the two major DAPs play complementary roles in T. onnurineus NA1.
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基因功能
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原始数据
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文献解读
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