BACKGROUND Aminosilane-coated iron oxide nanoparticles (AmS-IONPs) have been widely used in constructing complex and multifunctional drug delivery systems. However, the biocompatibility and uptake characteristics of AmS-IONPs in central nervous system (CNS)-relevant cells are unknown. The purpose of this study was to determine the effect of surface charge and magnetic field on toxicity and upta...

The TRAF3 molecule interacts with the cytoplasmic carboxyl terminus (COOH terminus) of the Epstein-Barr virus-encoded oncogene LMP-1. NF-kappaB activation is a downstream signaling event of tumor necrosis factor receptor-associated factor (TRAF) molecules in other signaling systems (CD40 for example) and is an event caused by LMP-1 expression. One region capable of TRAF3 interaction in LMP-1 is...

A human erythrocyte Band 3 peptide, affinity labeled with pyridoxal phosphate, was purified by a combination of gel permeation and reverse-phase high performance liquid chromatography. The amino acid sequence of the transmembrane peptide was determined by sequencing subfragments of the peptide obtained from lysyl endopeptidase and staphylococcal proteinase V8 digestions. When a peptide containi...

Quantum dots (QDs) of two different surface chemistries (carboxyl (COOH) and poly ethylene glycol (PEG) modified) were utilized to determine surface chemistry impacts on QD mobility and distribution in bacterial biofilms. Epifluorescent and Confocal Laser Scanning Microscopy (CLSM) were used to evaluate QD association with biofilm components (proteins, cells and extracellular polymeric substanc...

All known glycophosphatidylinositol (GPI)-anchored membrane proteins contain a COOH-terminal hydrophobic domain necessary for signalling anchor attachment. To examine the requirement that this signal be at the COOH terminus of the protein, we constructed a chimeric protein, DAFhGH, in which human growth hormone (hGH) was fused to the COOH terminus of decay accelerating factor (DAF) (a GPI-ancho...

Tryptic and chymotryptic peptide fragments obtained from performic acid-oxidized porcine neurophysin-I were isolated and purified by gel filtration, ion exchange chromatography, paper electrophoresis, and paper chromatography. The larger tryptic peptides were further hydrolyzed by papain, chymotrypsin, pepsin, or HCl to yield shorter fragments amenable to Edman degradation. The sum of the compo...

In this work the effects of four different multiwalled carbon nanotubes (MWCNTs), including long carboxylated (L-COOH), short carboxylated (S-COOH), long aminated (L-NH(2)) and short aminated (S-NH(2)) ones, on the integrity of red blood cells, coagulation kinetics and activation of platelets were investigated with human whole blood. We found that the four MWCNTs induced different degrees of re...

The NH(2)- and COOH-termini of the ATP-sensitive potassium (K(ATP)) channel pore-forming subunit, Kir6.2, both lie intracellularly and interact with one another. To study this interaction, cyan fluorescent protein (CFP) and yellow fluorescent protein (YFP) were fused to the NH(2)- and COOH-termini of Kir6.2, respectively (CFP-Kir6.2-YFP). These fluorescent proteins have sufficient spectral over...

Objective: To study carboxyl-terminal (COOH) parathyroid hormone (PTH) circulating forms in patients with hyperparathyroidism due to end stage renal disease (ESRD). Methods: An immunometric assay that recognizes both intact and COOH PTH forms was developed. The assay, in conjunction with an intact assay, was used to measure PTH in serum samples obtained from 25 patients with hyperparathyroidism...

Organic single‐crystalline structures can effectively generate and confine photons, which be potential building blocks for the optical circuits. While designing of organic molecules tune photoluminescence (PL) property, it is challenging to achieve efficient laser emission light resonance in different forms molecular aggregates. Herein, a dicarboxylated carbon‐bridged oligophenylenevinylene (CO...