title: Biotinylated proteins as molecular weight standards on Western blots.
abstract: Protein molecular weight standards were biotinylated by reaction with biotinyl-N-hydroxysuccinimide ester. The biotinylated proteins were resolved by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and electrophoretically transferred to nitrocellulose paper. The resolved protein bands were detected by formation of a streptavidin-biotin/horseradish peroxidase complex and reaction with 4-chloro-1-naphthol and hydrogen peroxide. The biotinylated proteins are easy to prepare and are useful as molecular weight standards with most procedures employing immunodetection of proteins following transfer to nitrocellulose paper.
mesh_terms: D001710:Biotin; D003101:Collodion; D004591:Electrophoresis, Polyacrylamide Gel; D008970:Molecular Weight; D011506:Proteins / Q000302:isolation & purification*; D012015:Reference Standards; D012967:Sodium Dodecyl Sulfate
chemical_list: D011506:Proteins; D012967:Sodium Dodecyl Sulfate; D001710:Biotin; D003101:Collodion