The effect of base-pair sequence on electrochemically driven denaturation.

Bioelectrochemistry

School of Chemistry, University of Southampton, Southampton SO17 1BJ, United Kingdom.

Published: June 2012

AI Article Synopsis

  • The application of a voltage ramp causes denaturation of double-stranded DNA (dsDNA), leading to strand separation.
  • The melting potential (E(m)), at which half of the dsDNA duplexes denature, is shown to correlate with the calculated nearest neighbor and experimental melting temperatures (T(m)).
  • This correlation suggests that electrochemical melting potential can be used to assess dsDNA stability, allowing for the design of DNA probes with predictable melting potentials for future experiments.

Article Abstract

Application of a voltage ramp can result in denaturation of dsDNA and strand separation. We show that the potential at which half of the surface immobilised duplexes denature (the melting potential, E(m)) directly correlates with the calculated nearest neighbour and experimental melting temperatures; T(m), for a duplex is solution. The results demonstrate that the electrochemical melting potential measures the stability of the dsDNA, and therefore existing nearest neighbour melting models can be utilized to design DNA probes with predictable electrochemical melting potentials for future assay applications.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.bioelechem.2011.11.003DOI Listing

Publication Analysis

Top Keywords

melting potential
8
nearest neighbour
8
electrochemical melting
8
melting
5
base-pair sequence
4
sequence electrochemically
4
electrochemically driven
4
driven denaturation
4
denaturation application
4
application voltage
4

Similar Publications

Introduction: This study compared the clinical outcomes of allogenic cultured limbal epithelial transplantation (ACLET) and cultivated oral mucosal epithelial transplantation (COMET) in the management of limbal stem cell deficiency (LSCD).

Methods: Forty-one COMET procedures in 40 eyes and 69 ACLET procedures in 54 eyes were performed in the Corneoplastic Unit of Queen Victoria Hospital, East Grinstead. Data were examined for demographics, indications, ocular surface stability, absence of epithelial defect, ocular surface inflammation, visual outcomes, and intra- and postoperative complications.

View Article and Find Full Text PDF

Numerous commercially available biopharmaceuticals are frozen or freeze-dried in vials. The temperature at which ice nucleates and its distribution across vials in a batch is critical to the design of freezing and freeze-drying processes. Here we study experimentally how the level of particulate impurities - a key parameter in pharmaceutical manufacturing - affects the ice nucleation behavior.

View Article and Find Full Text PDF

Synthesis and characterization of dextran palmitate for extrusion 3D printing.

Int J Biol Macromol

January 2025

KU Leuven, Department of Chemical Engineering, Chemical and Biochemical Reactor Engineering and Safety (CREaS), Celestijnenlaan 200F, 3001 Leuven, Belgium. Electronic address:

The fabrication of objects with complex shape and geometry has been greatly facilitated with the advancements in additive manufacturing. While synthetic polymers like ABS and PLA have found widespread use in extrusion 3D printing, other biobased thermoplastics that are both biodegradable and biocompatible could offer strategic advantages over traditional synthetic materials. In this work dextran of low (20 kDa) and medium (40 kDa) molecular weight (MW) was modified with palmitic acid to obtain meltable polymers for extrusion 3D printing/fused deposition modeling additive manufacturing.

View Article and Find Full Text PDF

In this study, novel 2-styrylquinoline derivatives possessing a planar aromatic system and a flexible side chain with an amino substituent were designed and synthesized as DNA-intercalating antitumor agents. The cytotoxic activity of the synthesized compounds was evaluated against four cancer cell lines including MCF-7 (breast cancer cells), A549 (lung epithelial cancer cells), HCT116 (colon cancer cells) and normal cell line L929 (mouse fibroblast cell line). The results displayed that the anti-cancer activity of the target quinolines is sensitive to the lipophilic nature of the C-6 and C-7 quinoline substituents.

View Article and Find Full Text PDF

The synthesis and characterization of benzo[d]thiazol-2-amine derivatives, which were prepared by reacting benzothiazole with para-aminobenzophenone in ethanol, supplemented with glacial acetic acid. Subsequently, compound (2) was synthesized from compound (1) using NaNO, HPO, and HNO in a water-based solvent, resulting in 2-hydroxy-1-naphthaldehyde. Another derivative, compound (3), was synthesized by reacting compound (1) with vanillin under similar conditions.

View Article and Find Full Text PDF

Want 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!