Trypsin has been immobilized by adsorption onto Amberlite XAD-7 beads. The Michaelis constant (Km) of the enzyme was increased about sevenfold following the immobilization. Its rate of penetration into the porous beads was determined by staining the beads, which had been split, with naphthol blue black. The extent of diffusional rate limitation of immobilized trypsin was related to the penetration depth of the enzyme into the beads. This can be controlled by manipulating the conditions during the preparation of the immobilized enzyme.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/jctb.280550213 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Construction of a Multiple Cyclic Ligation-Promoted Exponential Recombinase Polymerase Amplification Platform for Sensitive and Simultaneous Monitoring of Cancer Biomarkers Fpg and FEN1.
Anal Chem
January 2025
School of Chemistry and Chemical Engineering, State Key Laboratory of Digital Medical Engineering, Southeast University, Nanjing 211189, China.
Formamidopyrimidine DNA glycosylase (Fpg) and flap endonuclease 1 (FEN1) are essential to sustaining genomic stability and integrity, while the abnormal activities of Fpg and FEN1 may lead to various diseases and cancers. The development of simple methods for simultaneously monitoring Fpg and FEN1 is highly desirable. Herein, we construct a multiple cyclic ligation-promoted exponential recombinase polymerase amplification (RPA) platform for sensitive and simultaneous monitoring of Fpg and FEN1 in cells and clinical tissues.
View Article and Find Full Text PDFAn integrated immunofluorescent detection system for automated and sensitive protein quantification based on a microfluidic flow cytometry platform.
Anal Chim Acta
March 2025
Holosensor Medical Technology Ltd, Room 12, No. 1798, Zhonghuayuan West Road, Yushan Town, Suzhou, 215000, China; Department of Veterinary Medicine, University of Cambridge, Cambridge, UK. Electronic address:
Rapid and sensitive protein detection methods are of benefit to clinical diagnosis, pathological mechanism research, and infection prevention. However, routine protein detection technologies, such as enzyme-linked immunosorbent assay and Western blot, suffer from low sensitivity, poor quantification and labourious operation. Herein, we developed a fully automated protein analysis system to conduct fast protein quantification at the single molecular level.
View Article and Find Full Text PDFCo-linear Hexa-Mirror-Based Multi-Periodic Structured Illumination Microscopy.
Nano Lett
January 2025
Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016, India.
Structured illumination microscopy (SIM) is a robust wide-field optical nanoscopy technique. Several approaches are implemented to improve SIM's resolution capability (∼2-fold). However, achieving a high resolution with a large field of view (FOV) is still challenging.
View Article and Find Full Text PDFA multi-analytical study of the Montelirio beaded attires: Marine resources, sumptuary crafts, and female power in copper age Iberia.
Sci Adv
January 2025
Department of Crystallography, Mineralogy and Agricultural Chemistry, Faculty of Chemistry, University of Seville, Seville, Spain.
Excellent indicators of technology, social organization, exchange patterns, and even beliefs, beads are a topic of research in their own right. Findings made between 2010 and 2011 at the Montelirio tholos burial, part of the Valencina Copper Age mega-site, in south-western Spain, revealed what amounts to the largest single-burial ever-documented assemblage of beads. Furthermore, the Montelirio beads were part of unparalleled beaded attires worn by some of the people buried in the grave, mostly females.
View Article and Find Full Text PDFFibromuscular Dysplasia Clinical Phenotype Manifesting as a Distal Spontaneous Coronary Artery Dissection in a Middle-Aged Man.
Cureus
January 2025
Internal Medicine, University of Florida College of Medicine, Gainesville, USA.
Fibromuscular dysplasia (FMD) is a non-atherosclerotic, non-inflammatory vascular disease of medium-sized arteries that causes abnormal cellular growth in arterial walls and most commonly affects young to middle-aged women (20-50 years of age). While FMD often involves the renal arteries, it can affect any arterial bed. FMD has a characteristic angiographic appearance of a "string of beads.
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!