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Trehalose decorated nanostructures stabilize combined cross-linked enzyme aggregates (Combi-CLEAs) of β-galactosidase and glucose isomerase.
Int J Biol Macromol
January 2025
Department of Food Science, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY 14853, USA. Electronic address:
Combined cross-linked enzyme aggregates (Combi-CLEAs) of β-Galactosidase (β-Gal) and Glucose Isomerase (GI) allow the transformation of d-lactose to lactose-fructose syrup through one-pot cascade biocatalytic reactions. Despite its promise, the low thermostability of β-Gal and high-temperature demands for GI limits this application. Trehalose is a protein-stabilizing disaccharide which has been utilized in immobilized enzyme systems to enhance protein thermostability.
View Article and Find Full Text PDFDevelopment of high-strength, 3D-printable, and biocompatible gelatin/κ-carrageenan dual-network hydrogels for wound healing.
Int J Biol Macromol
January 2025
The Affiliated Qingyuan Hospital (Qingyuan People's Hospital), Guangzhou Medical University, Qingyuan, Guangdong Province 511518, China. Electronic address:
Gelatin/κ-carrageenan (Gel/KC) hydrogel has exhibited a significant potential in tissue engineering, however, there is still a need to further enhance its structural properties. This study developed a Gel/KC dual-network hydrogel with superior mechanical properties and structural stability, which was integrated with 3D printing to evaluate its ability to promote wound healing. The hydrogels with seven different Gel and KC ratios were prepared and characterized using rheological testing, thermal analysis, spectral analysis, micromorphology observation, and X-ray diffraction.
View Article and Find Full Text PDFIsolation and characterization of a β-galactosidase from for industrial processing.
JDS Commun
January 2025
Department of Food Science and Technology, The Ohio State University, Columbus, OH 43210.
In this study, a thermostable β-galactosidase from OSU-PECh-4A has been isolated through diafiltration and size-exclusion chromatography. The enzyme consists of a heterodimer with a molecular mass of 110 kDa, with a small and large subunit of 36 and 74 kDa, respectively. The Michaelis constant (K) and maximum velocity (V) values for lactose and -nitrophenyl-β-d-galactopyranoside (NPG) hydrolysis were, respectively, 29.
View Article and Find Full Text PDFConstruction and bacteriostatic effect analyses of a recombinant thermostable Newcastle disease virus expressing cecropin AD.
Vet Microbiol
January 2025
Hubei Provincial Key Laboratory of Animal Pathogenic Microbiology, Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan 430064, China; Key Laboratory of Prevention and Control Agents for Animal Bacteriosis (Ministry of Agriculture and Rural Affairs), Institute of Animal Husbandry and Veterinary, Hubei Academy of Agricultural Sciences, Wuhan 430064, China. Electronic address:
Cecropin AD (CAD), a hybrid antimicrobial peptide composed of the first 11 residues of cecropin A and last 26 residues of cecropin D, is a promising antibiotic candidate. Therefore, an efficient and convenient method for producing CAD is necessary for commercial applications. The Newcastle disease virus (NDV) has been widely used as a platform for gene delivery and exogenous protein expression.
View Article and Find Full Text PDFProbing the Dual Role of Ca in the LH1-RC Complex by Constructing and Analyzing Ca-Bound and Ca-Free LH1 Complexes.
Biomolecules
January 2025
Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China.
The genome of the mildly thermophilic hot spring purple sulfur bacterium, (.) , contains a multigene family that encodes a series of α- and β-polypeptides, collectively forming a heterogeneous light-harvesting 1 (LH1) complex. The LH1, therefore, offers a unique model for studying an intermediate phenotype between phototrophic thermophilic and mesophilic bacteria, particularly regarding their LH1 transition and moderately enhanced thermal stability.
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