Capturem Streptavidin Miniprep Columns

Antibody enrichment performed on Capturem Streptavidin mini spin columns

Successive capture of antibodies in triplicate using Capturem Streptavidin. Panels A–C. First, 48 µg of biotinylated rabbit IgG in 200 µl Binding Buffer was passed through an equilibrated Capturem Streptavidin spin column, and 32.0 ± 1.4 µg (Panel B) was successfully immobilized on the membrane. Following a single wash step, a sample containing the spiked-in target antibody (~100 µg of anti-rabbit IgG from goat) in hybridoma medium with 20 mouse serum was diluted with Binding Buffer and applied to the Capturem Streptavidin column. After two successive washing steps with Binding Buffer and then PBS, the enriched target antibody was eluted from the biotinylated capture antibody in 1.0 M glycine in three steps to yield 42 ± 5 µg (Panel C) of highly pure target antibody.

Capturem Protein A- or G-functionalized membranes

Antibody purification workflow for Capturem Protein A or G 96-well plates. Each well can be loaded with up to 850 µl of a diluted sample (antibody sample diluted from 1:1 to 1:20 with buffer). Following binding, the membrane is then washed and the bound antibiody eluted with the appropriate buffers. Note: Protocol time varies for each format. Check user manuals for specifics on protocol times.

Capturem spin columns and filtration devices

Available Capturem spin column and filtration device formats. Pictured from left to right: nanoprep, miniprep, 96-well, 24-well, maxiprep, and large-volume Capturem formats. Formats available vary for the different functionalized membranes. Check product pages for list of available formats.

Load volumes and approximate yields for available Capturem formats by chemistry

Load volumes and yields of Capturem purification formats.