Physiological responses of the green microalga Acutodesmus dimorphus to temperature induced oxidative stress conditions

2020 ◽  
Vol 170 (4) ◽  
pp. 462-473 ◽  
Author(s):  
Kaumeel Chokshi ◽  
Imran Pancha ◽  
Khanjan Trivedi ◽  
Rahulkumar Maurya ◽  
Arup Ghosh ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Physiological Responses ◽  
Stress Conditions ◽  
Green Microalga

scholarly journals Thiol-based switching mechanisms of stress-sensing chaperones

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Kathrin Ulrich ◽  
Blanche Schwappach ◽  
Ursula Jakob
Keyword(s):  
Oxidative Stress ◽  
Environmental Changes ◽  
Stress Conditions ◽  
Stress Exposure ◽  
Atp Levels ◽  
Protein Functions ◽  
Activation Mechanisms ◽  
Client Proteins ◽  
Stress Sensing ◽  
Redox Switches

AbstractThiol-based redox switches evolved as efficient post-translational regulatory mechanisms that enable individual proteins to rapidly respond to sudden environmental changes. While some protein functions need to be switched off to save resources and avoid potentially error-prone processes, protective functions become essential and need to be switched on. In this review, we focus on thiol-based activation mechanisms of stress-sensing chaperones. Upon stress exposure, these chaperones convert into high affinity binding platforms for unfolding proteins and protect cells against the accumulation of potentially toxic protein aggregates. Their chaperone activity is independent of ATP, a feature that becomes especially important under oxidative stress conditions, where cellular ATP levels drop and canonical ATP-dependent chaperones no longer operate. Vice versa, reductive inactivation and substrate release require the restoration of ATP levels, which ensures refolding of client proteins by ATP-dependent foldases. We will give an overview over the different strategies that cells evolved to rapidly increase the pool of ATP-independent chaperones upon oxidative stress and provide mechanistic insights into how stress conditions are used to convert abundant cellular proteins into ATP-independent holding chaperones.

A manganese oxide nanozyme prevents the oxidative damage of biomolecules without affecting the endogenous antioxidant system

Nanoscale ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 3855-3863 ◽  
Author(s):  
Namrata Singh ◽  
Mohammed Azharuddin Savanur ◽  
Shubhi Srivastava ◽  
Patrick D'Silva ◽  
Govindasamy Mugesh
Keyword(s):  
Oxidative Stress ◽  
Oxidative Damage ◽  
Manganese Oxide ◽  
Antioxidant System ◽  
Mammalian Cells ◽  
Redox State ◽  
Stress Conditions ◽  
System P ◽  
Endogenous Antioxidant ◽  
Antioxidant Machinery

Multi-enzyme mimetic Mn3O4 nanoflowers (Mp) modulate the redox state of mammalian cells without altering the cellular antioxidant machinery under oxidative stress conditions.

Multistep Regulation of TXNIP Expression under Oxidative Stress Conditions: A role for microRNAs

2010 ◽  
Vol 49 ◽  
pp. S134
Author(s):  
Fernando Toshio Ogata ◽  
Wagner Luiz Batista ◽  
Tarsis Gestira Ferreira ◽  
Roberto Jun Arai ◽  
Junji Yodoi ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Stress Conditions

Immunological evidence for the presence of peroxiredoxin in pea leaf peroxisomes and response to oxidative stress conditions

2017 ◽  
Vol 39 (2) ◽  
Author(s):  
Francisco J. Corpas ◽  
José R. Pedrajas ◽  
José M. Palma ◽  
Raquel Valderrama ◽  
Marta Rodríguez-Ruiz ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Stress Conditions ◽  
Leaf Peroxisomes

scholarly journals Identification of novel small RNAs in Burkholderia cenocepacia KC-01 expressed under iron limitation and oxidative stress conditions

Microbiology ◽  
2017 ◽  
Vol 163 (12) ◽  
pp. 1924-1936 ◽  
Author(s):  
Suparna Ghosh ◽  
Chetna Dureja ◽  
Indu Khatri ◽  
Srikrishna Subramanian ◽  
Saumya Raychaudhuri ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Small Rnas ◽  
Stress Conditions ◽  
Iron Limitation ◽  
Burkholderia Cenocepacia ◽  
And Oxidative Stress
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