Sumoylation, a post-translational protein modification by small ubiquitin-like modifier (SUMO), has been implicated in many stress responses. Here we analyzed the potential role of sumoylation in osmo-response in yeast. We find that osmotic stress induces rapid accumulation of sumoylated species in normal yeast cells. Interestingly, disruption of MAP kinase Hog1 leads to a much higher level of accumulation of sumoylated conjugates that are independent of new protein synthesis. We also find that the accumulation of sumoylated species is dependent on a SUMO ligase Siz1. Notably, overexpression of SIZ1 in HOG1-disruption mutants (hog1Δ) but not in wild type cells leads to a markedly increased and prolonged accumulation of sumoylated species. Examination of osmo-tolerance of yeast mutants that display either an increase or a decrease in the global sumoylation level revealed an inverse relationship between accumulation of sumoylated conjugates and osmo-tolerance. Further investigation has shown that many of the sumoylated species induced by hyperosmotic stress are actually poly-sumoylated. Together, these findings indicate that abnormal accumulation of poly-sumoylated conjugates is harmful for osmo-tolerance in yeast, and suggest that Hog1 promotes adaptation to hyperosmotic stress partially via regulation of global sumoylation level.

BACKGROUND: Emotional intelligence and interpersonal sensitivity are known as important nursing skills. They have significant role in the promotion of nurses working life and the health care which they provide. The goal of this study was the determination of the relationship between emotional intelligence and interpersonal sensitivity with quality of work life in nurses working in governmental hospitals of Tehran city in 2019. MATERIALS AND METHODS: This investigation was a descriptive-analytical and correlation study which was conducted among 256 nurses working in five governmental hospitals in Tehran. The studied nurses were selected through in access sampling method. The instruments of research included demographic, emotional intelligence, interpersonal sensitivity, and work life quality questionnaires. The analysis of data was done by descriptive and deductive statistics (t-test and Pearson correlation coefficient) and also SPSS. RESULTS: The conditions of emotional intelligence, interpersonal sensitivity, and work life quality of nurses were, in turn, in average, severe, and weak levels. The correlation between emotional intelligence and work life quality of nurses was significant (P ≤ 0.05) and they were positively correlated with each other (r = 0.311). The relationship between interpersonal sensitivity and work life quality of nurses was significant (P ≤ 0.05) and they were negatively correlated with each other (r = −0.43). CONCLUSION: The development of emotional intelligence and sensitivity in reciprocally interpersonal relations of nurses lead to fundamental changes in nurses’ attitude toward themselves, their colleagues, patients and their profession and can promote their work life quality. Therefore, these two skills are necessary for nurses and they should be taken into consideration by nursing schools, faculty members, instructors, and nursing managers.

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Sumoylation, a post‐translational protein modification by small ubiquitin‐like modifier (SUMO), has been implicated in many stress responses. Here we analyzed the potential role of sumoylation in osmo‐response in yeast. We find that osmotic stress induces rapid accumulation of sumoylated species in normal cells. Interestingly, disruption of MAP kinase Hog1 leads to a much higher level of accumulation of sumoylated conjugates that are independent of new protein synthesis. We also find that the accumulation of sumoylated species is dependent on a SUMO ligase Siz1. Notably, overexpression of SIZ1 in Hog1‐disruptive mutants (hog1[[Unsupported Character ‐ Symbol Font □]]) but not in wild type cells leads to a markedly increased and prolonged accumulation of sumoylated species. Examination of osmo‐tolerance of mutants that display either an increase or a decrease in the global sumoylation level revealed an inverse relationship between accumulation of sumoylated conjugates and somo‐tolerance. Further investigation has shown that many of the sumoylated species induced by hyperosmotic stress are actually poly‐sumoylated. Together, these findings indicated that abnormal accumulation of poly‐sumoylated conjugates is harmful for osmo‐tolerance, and suggest that Hog1 promotes adaptation to hyperosmotic stress partially via regulation of global sumoylation level.