Unusual Antioxidant Properties of 26S Proteasome Isolated from Cold-Adapted Organisms
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چکیده
منابع مشابه
Unusual Antioxidant Properties of 26S Proteasome Isolated from Cold-Adapted Organisms
The oxidative challenge represents an important factor affecting the adaptive strategies in Antarctic fish, but their impact on the protein degradation machinery still remains unclear. The previous analysis of the first 26S proteasome from the Antarctic red-blooded fish Trematomus bernacchii, evidenced improved antioxidant functions necessary to counteract the environmental pro-oxidant conditio...
متن کاملUncommon functional properties of the first piscine 26S proteasome from the Antarctic notothenioid Trematomus bernacchii.
Protein homoeostasis is a fundamental process allowing the preservation of functional proteins and it has a great impact on the life of the Antarctic organisms. However, the effect of low temperatures on protein turnover is poorly understood and the cold-adaptation of the degradation machinery remains an unresolved issue. As the 26S proteasome represents the main proteolytic system devoted to t...
متن کاملTargeting of substrates to the 26S proteasome.
The ubiquitin-proteasome pathway is the principal mechanism for the turnover of short-lived proteins in eukaryotic cells. In this pathway, the covalent ligation of ubiquitin to the substrate is a signal for recognition by the 26S proteasome. Recent studies indicate that targeting of substrates of the ubiquitin pathway to the proteasome is usually accomplished by the ligation of a polyubiquitin ...
متن کاملStructure of the Human 26S Proteasome
The 26S proteasome plays an essential role in regulating many cellular processes by the degradation of proteins targeted for breakdown by ubiquitin conjugation. The 26S complex is formed from the 20S core, which contains the proteolytic active sites, and 19S regulatory complexes, which bind to the 20S core to activate it and confer specificity for ubiquitinated protein substrates. We have deter...
متن کاملRegulation of Repair by the 26S Proteasome
Cellular processes such as transcription and DNA repair may be regulated through diverse mechanisms, including RNA synthesis, protein synthesis, posttranslational modification and protein degradation. The 26S proteasome, which is responsible for degrading a broad spectrum of proteins, has been shown to interact with several nucleotide excision repair proteins, including xeroderma pigmentosum B ...
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ژورنال
عنوان ژورنال: International Journal of Molecular Sciences
سال: 2017
ISSN: 1422-0067
DOI: 10.3390/ijms18081605