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Colostrum, the initial mammary secretion produced by various mammals following birth, is a conduit for maternal immunity transfer in diverse mammalian species. Concurrently, many cellular processes are occurring in the neonatal small intestine to prepare it to receive molecular signals from a superfood essential for the neonate's health and development. During the prepartum colostrum secretion, the newborn intestine undergoes transient alterations in the intestinal barrier, primarily regulating immunoglobulin absorption.
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Department of Chemistry, University of California, Riverside, California 92521, United States.
Defining the underlying toxicological mechanisms of various small molecules is of utmost importance in understanding the pathogenesis of chemical exposure-related human diseases and developing safe and effective therapeutics. Herein, we discuss the toxicological mechanisms of different small molecules utilizing the different tools of chemical biology.
View Article and Find Full Text PDFProteomic Profiling of Potential E6AP Substrates via Ubiquitin-based Photo-Crosslinking Assisted Affinity Enrichment.
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The ubiquitin (Ub) ligase E6AP, which is encoded by the UBE3A gene, has been associated with several human diseases including cervical cancer and Angelman syndrome, a neurodevelopmental disorder. Yet, our knowledge about disease-relevant substrates of E6AP is still limited. The formation of a thioester complex between Ub and the catalytic Cys residue of E6AP represents an essential intermediate step in E6AP-mediated ubiquitination.
View Article and Find Full Text PDFNeuroprotective Indole Alkaloids from the Soil-Derived Fungus sp. XZ8.
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A chemical investigation of the soil-derived fungus sp. XZ8 led to the isolation of five new indole alkaloids, trichindoles A-E (-), with diverse architectures, along with seven known analogues (-). Their structures were elucidated by extensive spectroscopic data analysis, and their absolute configurations were determined by single-crystal X-ray diffraction and modified Mosher's method.
View Article and Find Full Text PDFIdentification and Characterization of a New Thermophilic κ-Carrageenan Sulfatase.
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Faculty of Chemistry, Biotechnology, and Food Science, NMBU Norwegian University of Life Sciences, P.O. Box 5003, 1432 Aas, Norway.
Carrageenans are sulfated polysaccharides found in the cell wall of certain red seaweeds. They are widely used in the food industry for their gelling and stabilizing properties. In nature, carrageenans undergo enzymatic modification and degradation by marine organisms.
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