Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 22, Issue 19, Pages -Publisher
MDPI
DOI: 10.3390/ijms221910878
Keywords
cystic fibrosis; Escherichia coli; schistosomiasis; tuberculosis; universal stress protein
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Universal stress proteins (USPs) were first discovered in Escherichia coli over two decades ago, and have since been detected in various organisms, playing roles in cellular responses under stressful conditions. However, the molecular and biochemical aspects of their functions remain largely elusive.
Universal stress proteins (USPs) were originally discovered in Escherichia coli over two decades ago and since then their presence has been detected in various organisms that include plants, archaea, metazoans, and bacteria. As their name suggests, they function in a series of various cellular responses in both abiotic and biotic stressful conditions such as oxidative stress, exposure to DNA damaging agents, nutrient starvation, high temperature and acidic stress, among others. Although a highly conserved group of proteins, the molecular and biochemical aspects of their functions are largely evasive. This is concerning, as it was observed that USPs act as essential contributors to the survival/persistence of various infectious pathogens. Their ubiquitous nature in various organisms, as well as their augmentation during conditions of stress, is a clear indication of their direct or indirect importance in providing resilience against such conditions. This paper seeks to clarify what has already been reported in the literature on the proposed mechanism of action of USPs in pathogenic organisms.
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