The insect enzyme ecdysteroid phosphate phosphatase (EPP) mobilizes active ecdysteroids from an inactive phosphorylated pool. Previously assigned to a novel class, it is shown here that it resides in the large histidine phosphatase superfamily related to cofactor-dependent phosphoglycerate mutase, a superfamily housing notably diverse catalytic activities. Molecular modeling reveals a plausible substrate-binding mode for EPP. Analysis of genomic and transcript data for a number of insect species shows that EPP may exist in both the single domain form previously characterized and in a longer, multidomain form. This latter form bears a quite unexpected relationship in sequence and domain architecture to vertebrate proteins, including Sts-1, characterized as a key regulator of T-cell activity. Long form Drosophila melanogaster EPP, human Sts-1, and a related protein from Caenorhabditis elegans have all been cloned, assayed, and shown to catalyse the hydrolysis of ecdysteroid and steroid phosphates. The surprising relationship described and explored here between EPP and Sts-1 has implications for our understanding of the function(s) of both.
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http://dx.doi.org/10.1002/prot.21357 | DOI Listing |
Front Psychol
January 2025
School of Education and Human Development, Center for the Advanced Study of Teaching and Learning, University of Virginia, Charlottesville, VA, United States.
Children experience a variety of emotions in achievement settings. Yet, mathematics-related emotions other than anxiety are understudied, especially for young children entering primary school. The current study reports the prevalence and intensity of six basic, discrete achievement emotions (joy/happiness, sadness, surprise, anger, fear, and disgust) expressed on the faces of 15 kindergarten-aged children as they solved increasingly complex arithmetic story problems in a 3-month teaching experiment.
View Article and Find Full Text PDFFront Public Health
January 2025
School of Journalism and Communication, Guangxi University, Nanning, China.
With the development of social media platforms such as Weibo, they have provided a broad platform for the expression of public sentiments during the pandemic. This study aims to explore the emotional attitudes of Chinese netizens toward the COVID-19 opening-up policies and their related thematic characteristics. Using Python, 145,851 texts were collected from the Weibo platform.
View Article and Find Full Text PDFAntibiotics (Basel)
January 2025
Department of Epidemiology and Biostatistics, Mel and Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ 85724, USA.
: The COVID-19 pandemic affected antimicrobial stewardship in healthcare, including Skilled Nursing Facilities (SNFs). This study aimed to (1) assess the appropriateness of antibiotic prescriptions for urinary tract infections (UTIs) and respiratory tract infections (RTIs) and identify predictors of inappropriate use; (2) analyze changes in prescribing practices relative to the pandemic's onset. : A retrospective review of electronic medical records from a 300-bed SNF (March 2019-March 2021) identified suspected UTIs and RTIs based on laboratory tests and antibiotic requests.
View Article and Find Full Text PDFBiomedicines
December 2024
CCRM Genetics, 10290 Ridgegate Circle, Lone Tree, CO 80124, USA.
Abnormally fertilized embryos are often discarded during in vitro fertilization due to the fact that known chromosomal ploidy abnormalities lead to implantation failure or pregnancy loss. The objective of this study was to determine if pronuclear numeration (PN) observed at fertilization check is representative of the true ploidy status of the subsequent developing blastocyst in order to maximize the number of viable embryos available for infertility patients and increase their chances of conception. Upon successful fertilization, pronuclear numeration was noted, and zygotes were cultured to the blastocyst stage.
View Article and Find Full Text PDFActa Psychol (Amst)
January 2025
Department of Biomedical Laboratory Science, Honam University, Gwangju 62399, Republic of Korea. Electronic address:
Facial emotion recognition (FER), a key component of social cognition, plays a critical role in social interactions. In the aging process, FER among older adults holds significant potential as a tool for diagnosing cognitive function or enhancing interpersonal relationships. However, research in this area remains limited.
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