Serum amyloid P component (SAP) is a glycoprotein of interest due to its presence in amyloid plaque formations. As with most glycoproteins, SAP can possibly vary greatly in its isoforms, which can be an important factor toward understanding the role of SAP. Interestingly, previous characterizations suggest varying degrees of microheterogeneity, some of which are in conflict. In this work, we pr...

Denaturing Isoelectric Focusing Free-Flow Electrophoresis (IEF-FFE) Fractionation of Crude Protein Mixtures Peter J.A. Weber, Gerhard Weber, and Christoph Eckerskorn This protocol was adapted from "Denaturing IEF-FFE Fractionation of Crude Protein Mixtures," contributed by Peter J.A. Weber, Gerhard Weber, and Christoph Eckerskorn, Chapter 19, in Purifying Proteins for Proteomics (ed. Simpson). ...

Newly-developed gel isoelectric focusing techniques provide for rapid and correct identification of human hemoblobins. With this technique, we examined samples previously identified by the National Hemoglobinopathy Standardization Laboratory of the Center for Disease Control. A wide variety of both normal and abnormal hemoglobins was included in the 134 different specimens examined. The isoelec...

For the development of specific immunological assays, the binding of a specific antibody (Ab) to the target antigen (Ag) has to be relatively strong. In this study, we have utilized affinity capillary electrophoresis (ACE), a form of capillary zone electrophoresis (CZE) to determine the binding constant (Kb) of specific Abs against bovine serum albumin (BSA) and the healthy prion protein (PrPc)...

A novel two-dimensional (2D) separation system for proteins was reported. In the system, a piece of dialysis hollow-fiber membrane was employed as the interface for on-line combination of capillary isoelectric focusing (CIEF) and capillary non-gel sieving electrophoresis (CNGSE). The system is similar equivalent to two-dimensional polyacrylamide gel electrophoresis (2D PAGE), by transferring th...