Renin was purified from 47 kg of hog kidney to produce enough enzyme for enzymatic and physicochemical characterization. The procedure included extraction at pH 3.5 in the presence of protease inhibitors, two ammonium sulfate precipitations, ion exchange chromatography on Sepharose-hexamethylenediamino-pepstatin gel, gel filtration, and isoelectric focusing. Renin, 2.3 mg, with a specific activ...

Core histones have been isolated from Schizosaccharomyces pombe and compared electrophoretically to core histones from Saccharomyces cerevisiae and rat liver. The molecular masses of all cognate histones examined were found to be very similar as determined by SDS gel electrophoresis. Histones H3, H2A and H2B from Sch. pombe migrated almost identically to their respective counterparts from S. ce...

Pulsed field gel electrophoresis (PFGE) is capable of resolving large DNA molecules of up to two million nucleotides and is becoming a widely used technique in DNA studies (1—3). Three factors can potentially limit PFGE in a laboratory: 1. the cost of the apparatus, 2. reproducibility of electrophoretic conditions, and 3. unusually long electrophoretic time. To alleviate some of these problems ...

Seven buffer and gel systems for polyacrylamide gel electrophoresis using discontinuous voltage and pH gradients (disc electrophoresis according to ORNSTEIN-UAVIS) and five systems using discontinuous voltage gradients at constant pH (according to ALLEN) have been compiled and characterized. Usefulness and applicability of the systems for clinical investigations are discussed and illustrated by...

Capillary zone electrophoresis (CZE) of serum proteins is increasingly gaining impact in clinical laboratories. In this report, we evaluate automated capillary zone electrophoresis by Capillarys (Sebia, France). Within-run and between-run imprecision for the five electrophoretic fractions was <2% and <6%, respectively. Data obtained with Capillarys correlated with results obtained with agarose ...