This product is a MSP nanodisc assembly kit. It contains a vial of lyophilized membrane scaffold protein MSP1D1 dh5 (His-tagged) and a vial of DMPC or POPC phopshospholipid to assemble a MSP nanodisc.

• Origin of MS protein: Human
• Purity: >90% (Determined by SDS-PAGE)
• Number of amino acids: 168
• Molecular mass: 19488 Da
• Extinction coefficient (in water) ε280:18450 M⁻¹ cm⁻¹
• Buffer: 20 mM TRIS pH 7.4; 100 mM NaCl; 0.5 mM EDTA
• Sequence (1-Letter Code): GSTFSKLREQ LGPVTQEFWD NLEKETEGLR QEMSKDLEEV AKVQPYLDDF QKKWQEEMEL RQKVEPLGEE MRDRARAHVD ALRTHLAPYS DELRQRLAAR LEALKENGGA RLAEYHAKAT EHLSTLSEKA KPALEDLRQG LLPVLESFKV SFLSALEEYT KKLNTQ
• Affinity tag: None

Membrane scaffold proteins derive from apolipoprotein (apo; A-I). They are used in membrane protein sciences to stabilize 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. MSP1D1 dh5 (His-tagged) creates nanodiscs of ∼7 to 8 nm in diameter.

With this assembly kit both cellular as well as cell-free expressed proteins can be stabilized in MSP nanodiscs. Just use the corresponding protocol for each purpose (see below). The MSP protein contains a His-tag, keep that in mind when choosing the affinity tag for your membrane protein.