We present a method to discriminate between analytes based on their size using multiple wavelengths in a Young interferometer. We measured the response of two wavelengths when adding 85 nm beads (representing specific binding), protein A (representing non-specific binding) and D-glucose (inducing a bulk change) to our sensor. Next, the measurements are analysed using a approach based on theoret...

colonization of nontypeable haemophilus influenzae (nthi) in nasopharynx causes respiratory tract disease. in 80% of clinical isolates, hmw proteins are the major adhesions and induce protective antibodies in the hosts. therefore, it can be used as a vaccine candidate. the aim of this study is designing and cloning of the conserved regions of nthi hmw1 core binding domain.in this study, the sta...

Development of potent new anti-Shigella agents for rapid and specific detection and treatment is of great importance. Aptamers, nucleic acid oligomers capable of specific binding to a wide range of non-nucleic acid targets, may be of value for this purpose. In the present study, we used a Systematic Evolution of Ligands by Exponential enrichment (SELEX) process to select DNA aptamers that b...

Colonization of nontypeable Haemophilus influenzae (NTHi) in nasopharynx causes respiratory tract disease. In 80% of clinical isolates, HMW proteins are the major adhesions and induce protective antibodies in the hosts. Therefore, it can be used as a vaccine candidate. The aim of this study is designing and cloning of the conserved regions of NTHi hmw1 core binding domain.In this study, the sta...

recently, specific attention has been paid to aptamers, short dna or rna, as a tool for cancer diagnosis and therapy. in the present study mcs nanogels were prepared by myristate: chitosan at 1:9 ratio and were characterized by several techniques. a selected ssdna aptamer(apt) capable of detecting lncap cells was linked to myristilated chitosan nanogels (apt-mcs) by glutaraldehyde and loaded wi...

Enzymes play a central role in the detection of target molecules biotechnological fields. Most probes used are bifunctional proteins comprising enzymes and binding conjugated by chemical reactions. To create highly sensitive probe, it is essential to increase enzyme-to-binding protein ratio probe. However, if reactions required prepare probe insufficiently site-specific, may lose functionality....

apotransferrin (apo tf)  in 0.1 m n-(2hydroxyethyl)piperazine-n2-ethanesulfanic acid at 25 ˚c  and ph 7.4 has been titrated with acidic solution of tb3+. the binding of tb3+ at  the two specific metal-binding sites of transferrin was followed from the changes in the difference uv spectra at 245 nm. the molar absorptivity per binding site for tb3+-tf is 22,500 ± 1000 m-1cm-1. to determine the tb...