Membrane scaffold protein, human origin.

• Extinction coefficient (in water) ε280: 44,920 M⁻¹cm⁻¹ (Human origin) 39,880 M⁻¹cm⁻¹ (Mouse origin)
• Buffer: 20 mM TRIS pH 7.4; 100 mM NaCl; 0.5 mM EDTAst
• Affinity tag: N-Terminal his-tag

Membrane scaffold proteins derive from apolipoprotein (apo; A-I). They are used in membrane protein sciences for the stabilization of membrane proteins in a lipid environment after the removal of the cell membrane. The size of the nanodisc is determined by the MSP that was used to create the disc. MSP2N2 (his-tagged) creates nanodiscs of ~17 nm in diameter.

Note that this products contains a N-terminal his-tag. Keep that in mind when chosing the affinity tag for your membrane protein.