Geminivirus Fitness via bZIP17/28 is impaired by the autophagic degradation of the betasatellite βV1 protein.

The unfolded protein response (UPR) is a vital cellular pathway that maintains endoplasmic reticulum (ER) homeostasis under conditions of ER stress, which is associated with the degradation of misfolded proteins. However, the role of ER-associated degradation in plant-microbe interactions has yet to be explored. In this study, we identified a novel viral protein βV1, encoded by tomato yellow leaf curl betasatellite (TYLCCNB), is an ER-localized protein that triggers ER aggregation.

N-terminal acetylation of the βC1 protein encoded by the betasatellite of tomato yellow leaf curl China virus is critical for its viral pathogenicity.

N-terminal acetylation (N-acetylation) is one of the most common protein modifications and plays crucial roles in viability and stress responses in animals and plants. However, very little is known about N-acetylation of viral proteins. Here, we identified the Thr residue at position 2 (Thr-2) in the βC1 protein encoded by the betasatellite of tomato yellow leaf curl China virus (TYLCCNB-βC1) as a novel N-acetylation site.

[Efficacy of ropivacaine injection at acupoints for labor analgesia and its effect on cortisol level in parturients].

Objective: To evaluate the efficacy of ropivacaine injection at the acupoints Hegu and Sanyinjiao for labor analgesia and its effects on cortisol level in parturients.

Methods: A total of 120 ASA class I-II nulliparous women undergoing spontaneous term labor (37 to 41 weeks of gestation) with a live, singleton fetus in the occiput anterior position and requiring labor analgesia with acupuncture were enrolled in this study. These women were randomized into study group and control group and received injections of 1 mL of 0.