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Structural analysis of sulfated fucan from the sea cucumber Holothuria mexicana with the assistance of endo-1,3-fucanase.
Carbohydr Polym
March 2025
State Key Laboratory of Marine Food Processing & Safety Control, College of Food Science and Engineering, Ocean University of China, 1299 Sansha Road, Qingdao 266404, China.
Sulfated fucan from sea cucumber has received growing interest in recent decades. Insight into the primary structure of sulfated fucan is fundamental to elucidate their bioactivity. The sea cucumber Holothuria mexicana possesses a high market demand, while the structure of its sulfated fucan (Hm-FUC) remains unclear.
View Article and Find Full Text PDFStructure and function of a β-1,2-galactosidase from Bacteroides xylanisolvens, an intestinal bacterium.
Commun Biol
January 2025
Department of Applied Biological Science, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan.
Galactosides are major carbohydrates that are found in plant cell walls and various prebiotic oligosaccharides. Studying the detailed biochemical functions of β-galactosidases in degrading these carbohydrates is important. In particular, identifying β-galactosidases with new substrate specificities could help in the production of potentially beneficial oligosaccharides.
View Article and Find Full Text PDFEnzymatic Synthesis of Biologically Active -Phosphinic Analogue of α-Ketoglutarate.
Biomolecules
December 2024
Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilov St., 32, 119991 Moscow, Russia.
Amino acid analogues with a phosphorus-containing moiety replacing the carboxylic group are promising sources of biologically active compounds. The -phosphinic group, with hydrogen-phosphorus-carbon (H-P-C) bonds and a flattened tetrahedral configuration, is a bioisostere of the carboxylic group. Consequently, amino--phosphinic acids undergo substrate-like enzymatic transformations, leading to new biologically active metabolites.
View Article and Find Full Text PDF[A commentary: New carbonic anhydrase IX-targeted probes for imaging hypoxic tumors].
Bull Cancer
February 2025
Département de biologie expérimentale des tumeurs, institut de carcinogenèse, centre national de recherche médicale en oncologie N.N. Blokhin, ministère de la Santé de Russie, 24 Kashirskoe shosse, Moscou 115522, Fédération de Russie. Electronic address:
In 2023, the journals "Bioconjugate Chemistry" and "Sensors and Actuators B: Chemical" published two papers describing new biosensors for imaging hypoxic regions in tumors. Cao et al. combined acetazolamide (AZA) to target carbonic anhydrase IX (CA IX) with two tyrosine-derived Mn(II)-ethylenediaminetetraacetic acid chelates (TyEDTA) on a rigid triazine (TA) scaffold.
View Article and Find Full Text PDFXYLAN O-ACETYLTRANSFERASE 6 promotes xylan synthesis by forming a complex with IRX10 and governs wall formation in rice.
Plant Cell
December 2024
Key Laboratory of Seed Innovation, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.
Xylan, a pivotal polymer with diversified structures, is indispensable for cell wall integrity and contributes to plant growth and biomass recalcitrance. Xylan is synthesized by multienzyme complexes named xylan synthase complexes (XSCs). However, the biochemical mechanism of XSCs and the functions of core components within XSC remain unclear.
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