background: the affinity of an antibody to its antigen is a crucial parameter in its biological activity and performance of an immunoassay such as elisa. affinity of most igg specific mabs are often determined by methods which require labeling of either antigen or antibody, and are sometimes difficult to control, do not always lead to the expected signal and often result in immunological modifi...

The combination of a high-affinity antibody to a hapten, and hapten-conjugated compounds, can provide an alternative to the direct chemical cross-linking of the antibody and compounds. An optimal hapten for in vitro use is one that is absent in biological systems. For in vivo applications, additional characteristics such as pharmacological safety and physiological inertness would be beneficial....

Biomolecular recognition underlying drug-target interactions is determined by both binding affinity and specificity. Whilst, quantification of binding efficacy is possible, determining specificity remains a challenge, as it requires affinity data for multiple targets with the same ligand dataset. Thus, understanding the interaction space by mapping the target space to model its complementary ch...

Parallel affinity screening of a DNA-encoded chemical library against rat, bovine and human serum albumin allowed the identification of small-molecule ligands with distinctive binding specificities to the individual proteins.

The electrochemical activity of 3-thienylboronic acid and its feature to form polymer films makes it a perspective receptor material for sensor applications. affinity properties this compound were studied here by isothermal titration calorimetry. A number different analytes tested, the highest binding enthalpy was observed sorbitol fructose. An increase pH in range 5.5–10.6 results rise with an...

Chemical modifications of innate DNA/RNA aptamers facilitate the improvement their function. Herein, we report our modular strategy to manipulate a thrombin-binding DNA aptamer (TBA) improve its anticoagulation activity and binding affinity. A set amino acid conjugates, termed acid–nucleic hybrids or ANHs, was synthesized incorporated into TBA loop sequences. We found that substitutions with hy...

In this study, quantum chemical calculations were made and interpreted to obtain chemical, nonlinear optical properties antibacterial activity parameters of eight 1,2,4-triazole derivatives. addition, the most stable structure was found in B3LYP/6-311++G(d,p) method by optimizing density functional theory compounds. Based on results optimized molecules, HOMO-LUMO energies calculated from these ...

To more fully understand the molecular mechanisms responsible for variations in binding affinity with antibody maturation, we explored the use of site specific fluorine labeling and (19)F nuclear magnetic resonance (NMR). Several single-chain (scFv) antibodies, derived from an affinity-matured series of anti-hen egg white lysozyme (HEL) mouse IgG1, were constructed with either complete or indiv...

We examine the etiological basis of hierarchical immunodominance of B cell epitopes on a multideterminant Ag. A model T-dependent immunogen, containing a single immunodominant B cell epitope, was used. The primary IgM response to this peptide included Abs directed against diverse determinants presented by the peptide. Interestingly, affinity of individual monomeric IgM Abs segregated around epi...