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来自三个系统发育域的嗜热菌中的获得性耐热性和热休克蛋白。

Acquired thermotolerance and heat shock proteins in thermophiles from the three phylogenetic domains.

作者信息

Trent J D, Gabrielsen M, Jensen B, Neuhard J, Olsen J

机构信息

Center for Mechanistic Biology and Biotechnology, Argonne National Laboratory, Illinois 60439.

出版信息

J Bacteriol. 1994 Oct;176(19):6148-52. doi: 10.1128/jb.176.19.6148-6152.1994.

DOI:10.1128/jb.176.19.6148-6152.1994
PMID:7928981
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC196839/
Abstract

Thermophilic organisms from each of the three phylogenetic domains (Bacteria, Archaea, and Eucarya) acquired thermotolerance after heat shock. Bacillus caldolyticus grown at 60 degrees C and heat shocked at 69 degrees C for 10 min showed thermotolerance at 74 degrees C, Sulfolobus shibatae grown at 70 degrees C and heat shocked at 88 degrees C for 60 min showed thermotolerance at 95 degrees C, and Thermomyces lanuginosus grown at 50 degrees C and heat shocked at 55 degrees C for 60 min showed thermotolerance at 58 degrees C. Determinations of protein synthesis during heat shock revealed differences in the dominant heat shock proteins for each species. For B. caldolyticus, a 70-kDa protein dominated while for S. shibatae, a 55-kDa protein dominated and for T. lanuginosus, 31- to 33-kDa proteins dominated. Reagents that disrupted normal protein synthesis during heat shock prevented the enhanced thermotolerance.

摘要

来自三个系统发育域（细菌、古菌和真核生物）的嗜热生物在热休克后获得了耐热性。在60℃下生长并在69℃下热休克10分钟的嗜热解芽孢杆菌在74℃下表现出耐热性，在70℃下生长并在88℃下热休克60分钟的柴田硫化叶菌在95℃下表现出耐热性，在50℃下生长并在55℃下热休克60分钟的疏绵状嗜热丝孢菌在58℃下表现出耐热性。热休克期间蛋白质合成的测定揭示了每个物种中主要热休克蛋白的差异。对于嗜热解芽孢杆菌，一种70 kDa的蛋白质占主导，而对于柴田硫化叶菌，一种55 kDa的蛋白质占主导，对于疏绵状嗜热丝孢菌，31至33 kDa的蛋白质占主导。在热休克期间破坏正常蛋白质合成的试剂阻止了耐热性的增强。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7084/196839/f0da9416bbab/jbacter00037-0282-a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7084/196839/f0da9416bbab/jbacter00037-0282-a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7084/196839/f0da9416bbab/jbacter00037-0282-a.jpg

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