PureCube StrepTactin® MagBeads XL is a suspension of 6% cross-linked magnetic agarose beads coupled to the StrepTactin protein.

• Usage: Highly specific affinity purification of Strep-(WSHPQFEK)-tagged proteins
• Specificity: Affinity to Strep-tagged (WSHPQFEK) proteins
• Binding capacity: >7 mg/ml
• Bead Ligand: StrepTactin®
• Bead size: 90 μm
• Matrix: 6% cross-linked agarose
• Filling quantity: Delivered as a 5% suspension
• Chemical stability: 2% Tween 20, 2% Triton X-100, 2% IGEPAL® 630/Nonidet P40, n-Octyl-beta-D-glucopyranoside, 0,2% n-Nonyl-beta-D-glucopyranoside, 0,35% N-Decyl-beta-D-maltoside, 2% Lauryl-sarcosine, 0, 1% SDS, 0,3% CHAPS, 1M Guanidine HCl, 1mM PMSF, 10% Ethanol, 5M NaCl, 2M (NH4)SO₄, 1M CaCl₂, 25% Glycerol
• Short-term storage: In equilibration buffer
• Long-term storage: In 20% ethanol at 4 °C

The PureCube StrepTactin® MagBeads XL enable protein yields of up to 7 mg protein per ml MagBeads. They were developed for protein purification assays using the Strep-tag® using magnetic separation. PureCube StrepTactin® products can also be obtained as agarose resin.