Halogenation of bases is a widespread method used for solving crystal structures of nucleic acids. However, this modification may have important consequences on RNA folding and thus on the success of crystallization. We have used a combination of UV thermal melting, steady-state fluorescence, X-ray crystallography, and gel electrophoresis techniques to study the influence of uridine halogenatio...

Blue native PAGE (BN-PAGE) uses Coomassie dye rather than denaturing SDS to provide a negative charge to proteins for electrophoresis. As such, it is a useful assay for investigating native supramolecular membrane complexes without the need for cross-linking. As Bak and Bax oligomers form in the mitochondrial outer membrane, and they can be efficiently monitored by BN-PAGE. Furthermore, BN-PAGE...

Polyacrylamide gel electrophoresis (PAGE), describes a technique widely used in biochemistry, forensics, genetics, molecular biology and biotechnology to separate biological macromolecules, usually proteins or nucleic acids, according to their electrophoretic mobility. Mobility is a function of the length, conformation and charge of the molecule. As with all forms of gel electrophoresis, molecu...

Characterization of microbial communities using single-strand conformation polymorphism (SSCP) was compared with that using denaturing gradient gel electrophoresis (DGGE). This comparison was based on the V3-4 region (Escherichia coli positions: 341-806) of 16S rRNA gene of bacterial or archaeal communities obtained from a methanogenic bioreactor. Significant differences in the bacterial bandin...

A thin-layer acrylamide gel electrophoresis technique suitable for analysis of serum or urine proteins is described in detail. The method gives sharp differentiation of protein fractions and is particularly suitable for the analysis of biological solutions containing proteins in low concentration.

Positive or negative electrical charges are frequently associated with biomolecules. When placed in an electric field, charged biomolecules move towards the electrode of opposite charge due to the phenomenon of electrostatic attraction. Electrophoresis is the separation of charged molecules in an applied electric field. The relative mobility of individual molecules depends on several factors. T...

By THOMAS G. FERRIS, ROBERT E. EASTERLING AND RICHARD E. BUDD T HE VARIOUS types of hemoglobins have been identified and reported by means of zone electrophoresis using supporting media such as filter paper,’ starch,2 agar,3 cellulose acetate,4 and combinations of these media. Recently a synthetic acrylamide gel ( Cyanogum 41#{176} ) has been investigated and found to have characteristics which...

INTRODUCTION The main objective of this study was to investigate the possibility of replacing electrophoresis cross-linker with non-electrophoresis N, N'-methylenebisacrylamide (BIS) in N-isopropyl acrylamide (NIPAM) polymer gel and its possible effect on dose response. METHODS NIPAM polymer gel was prepared from non-electrophoresis grade BIS and the relaxation rate (R2) was measured by MR im...