Assays for ubiquitin-like protein ligation and proteasome function in archaea

Fu, Xian; Adams, Zachary; Maupin-Furlow, Julie A.

doi:10.1016/bs.mie.2018.12.036

Cited by 1 publication

(1 citation statement)

References 29 publications

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“…There is little information about the proteasome concerning halophilic archaea; but the proteasome system in Hfx. volcanii has been widely studied in the presence of some stressors (high temperature, low salt, and the addition of l -canavanine), making it the best studied organism in haloarchaea [ 126 , 127 ]. This research concludes that psmA and panA are required to withstand low salt stress and l -canavanine, while psmA helps to overcome the hypersensitive responses of high temperature stress.…”

Section: Response To Stress In Halophilic Archaeamentioning

confidence: 99%

The Role of Stress Proteins in Haloarchaea and Their Adaptive Response to Environmental Shifts

et al. 2020

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Over the years, in order to survive in their natural environment, microbial communities have acquired adaptations to nonoptimal growth conditions. These shifts are usually related to stress conditions such as low/high solar radiation, extreme temperatures, oxidative stress, pH variations, changes in salinity, or a high concentration of heavy metals. In addition, climate change is resulting in these stress conditions becoming more significant due to the frequency and intensity of extreme weather events. The most relevant damaging effect of these stressors is protein denaturation. To cope with this effect, organisms have developed different mechanisms, wherein the stress genes play an important role in deciding which of them survive. Each organism has different responses that involve the activation of many genes and molecules as well as downregulation of other genes and pathways. Focused on salinity stress, the archaeal domain encompasses the most significant extremophiles living in high-salinity environments. To have the capacity to withstand this high salinity without losing protein structure and function, the microorganisms have distinct adaptations. The haloarchaeal stress response protects cells against abiotic stressors through the synthesis of stress proteins. This includes other heat shock stress proteins (Hsp), thermoprotectants, survival proteins, universal stress proteins, and multicellular structures. Gene and family stress proteins are highly conserved among members of the halophilic archaea and their study should continue in order to develop means to improve for biotechnological purposes. In this review, all the mechanisms to cope with stress response by haloarchaea are discussed from a global perspective, specifically focusing on the role played by universal stress proteins.

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Section: Response To Stress In Halophilic Archaeamentioning

confidence: 99%