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Lower Diversity of Amylase-Trypsin Inhibitors and -Released Opioid-Containing Peptides in Ancestral Compared to Modern Wheat Varieties Assessed by Proteomics and Peptidomics.
J Agric Food Chem
January 2025
Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, 1433 Ås, Norway.
This study focused on identifying amylase-trypsin inhibitors (ATIs) in seven Norwegian-cultivated wheat varieties, including common wheat and ancestral species, and identifying potentially harmful opioid peptides within the digesta of these wheats. LC-MS/MS analysis of tryptic peptides from ATI fractions revealed that the common wheat variety Børsum exhibited the highest diversity of ATIs ( = 24), while they were less represented in tetraploid emmer ( = 11). Hexaploid wheat Bastian showed low diversity and relative abundance of ATIs.
View Article and Find Full Text PDFThis study investigates the nutritional and anti-nutrient profiles of extrudates produced from seven formulations of pearl millet and Bambara groundnut flour in seven different ratios: 20:80, 30:70, 40:60, 50:50, 60:40, 70:30, and 80:20, with 100% pearl millet and 100% Bambara groundnut extrudates used as controls. The extrudates were processed using a twin screw extruder and analyzed for their nutritional and anti-nutritional properties. The findings revealed a rising pattern in the content of fiber, moisture, protein, ash and fat as the substitution of Bambara groundnut increased in the extrudate.
View Article and Find Full Text PDFIdentification of Kunitz-Type Inhibitor Gene Family of Reveals a Stress Tolerance Function in Inverted Cuttings.
Int J Mol Sci
December 2024
Key Laboratory for Forest Genetics and Tree Improvement and Propagation in University of Yunnan Province, Southwest Forestry University, Kunming 650224, China.
Plant protease inhibitors are a ubiquitous feature of plant species and exert a substantial influence on plant stress responses. However, the (Kunitz trypsin inhibitor) family responding to abiotic stress has not been fully characterized in . In this study, we conducted a genome-wide study of the family and analyzed their gene structure, gene duplication, conserved motifs, cis-acting elements, and response to stress treatment.
View Article and Find Full Text PDFPorphyromonas gingivalis gingipain potentially activates influenza A virus infectivity through proteolytic cleavage of viral hemagglutinin.
J Biol Chem
January 2025
Department of Microbiology and Immunology, Nihon University School of Dentistry, Tokyo, Japan. Electronic address:
Influenza is a worldwide health problem that causes significant morbidity and mortality among the elderly; therefore, its prevention is important. During influenza virus infection, the cleavage of hemagglutinin (HA) is essential for the virus to enter host cells. Influenza virus-bacteria interactions influence the pathogenicity of infections, and specific bacteria contribute to the severity of the disease by participating in HA cleavage.
View Article and Find Full Text PDFA Pyrene-Derived Fluorescent Probe for the Visual Detection of Protamine and Trypsin Activity.
J Fluoresc
January 2025
School of Light Industry, Beijing Technology and Business University, Beijing, 100048, China.
A pyrene-derived fluorescent probe (P4CG) was designed and synthesized for the purpose of detecting protamine and trypsin activity. The anionic probe self-assembled with protamine, driven by electrostatic and hydrophobic interactions, exhibiting a sensing behavior towards protamine in a fluorescence ratiometric manner. The assay demonstrated high sensitivity, with a limit of detection (LOD) of 13.
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