We report the polymerization of 5-mercuriuridine-5'-diphosphate (ppUHgX), in the presence of an excess of beta-mercaptoethanol, with polynucleotide phosphorylase from E. coli. A degradation of mercurated nucleotides with mercaptans was observed and about 30% of incorporation of mercury in the polymer was obtained after treatment with pancreatic RNase. The influence of ppUHgX and pUHgX with or without beta-mercaptoethanol was also studied on the polymerization of UDP. The ppUHgX did not polymerize in the absence of beta-mercaptoethanol.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/0300-9084(84)90119-6 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Influence of different polymeric materials of implant and attachment on stress distribution in implant-supported overdentures: a three-dimensional finite element study.
BMC Oral Health
January 2025
Department of Prosthetic Dentistry, Biomaterials Division, Faculty of Dentistry, King Salman International University, El Tur, South Sinai, Egypt.
Purpose: Investigating high performance thermoplastic polymers as substitutes to titanium alloy, in fabrication of implants and attachments to support mandibular overdenture, aiming to overcome stress shielding effect of titanium alloy implants. AIM OF STUDY: Assessment of stress distribution in polymeric prosthetic components and bone around polymeric implants, in case of implant-supported mandibular overdenture.
Materials And Methods: 3D finite element model was established for mandibular overdenture, supported bilaterally by two implants at canine region, and retained by two ball attachments.
Kinetic and isothermal study of dye absorption using pre-treated natural fabrics using polyamine compounds.
Sci Rep
January 2025
Finishing of Cellulose-based Fibres Department, National Research Centre, Pretreatment and Textile Research and Technology Institute, 33 El-Behouth St. (former El-Tahrir str.), Dokki, P.O. 12622, Giza, Egypt.
The study examined the use of cationic polymers (Polyethyleneimine and chitosan) in treating fabrics like cotton, wool, and cotton/wool (70/30) to improve their dyeability and printability. The study examined factors such as dye concentration, time, and temperature for the dyeing process. Results showed that all dyed and printed fabrics treated with polyethyleneimine and chitosan increased color strength by significant percentages.
View Article and Find Full Text PDFPhysiological impact of secondary nanoplastics on aquatic inhabitants in special reference to immunotoxicity.
Environ Monit Assess
January 2025
Department of Animal Sciences, School of Life Sciences, Central University of Himachal Pradesh, Kangra, 176206, India.
Nanoplastic (NP) pollution poses serious health hazards to aquatic ecosystems, impacting various physiological systems of aquatic organisms. This review examines the complex interplay between NPs and different physiological systems. In the digestive system, NPs downregulate the hsp70-like gene in Mytilus galloprovincialis, leading to decreased metabolic processes and impaired digestion.
View Article and Find Full Text PDFExtraction, Annotation, and Purification of Resin Glycosides from the Morning Glory Family (Convolvulaceae).
Methods Mol Biol
January 2025
Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, USA.
The metabolic diversity of plants, comprising over a million different metabolites across the plant kingdom, harbors enormous potential for pharmaceutical and biotechnological applications. Resin glycoside (RG) acylsugars from the Convolvulaceae are of interest due to their medicinal and agricultural potential. However, understanding the biological relevance of RGs is challenging as they exhibit a high lineage-specific structural diversity.
View Article and Find Full Text PDFMultiplexing Label-Free Polymeric Nanocarriers via Antipolymer Antibodies.
ACS Sens
January 2025
Centre for Advanced Imaging (CAI) and Australian Institute for Bioengineering and Nanotechnology, ARC Training Centre for Innovation in Biomedical Imaging Technology, The University of Queensland, St. Lucia, Queensland 4072, Australia.
Recent examples of immune responses directed against the synthetic polymer poly(ethylene glycol) (PEG) have led to the development of biocompatible polymers, which are viewed as promising candidates to act as surrogate materials for use in biological applications, such as hydrophilic poly(2-oxazoline)s (POx). Despite this, the characterization of critical aspects of the immune response against these emerging materials is sparse, in part because no known monoclonal antibodies (mAbs) against this family of synthetic material have been reported. To advance the understanding of such responses, we report the successful isolation and characterization of hybridoma-derived mAbs with excellent specificity for different POx species and notable selectivity for highly branched polymer architectures over linear systems.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!