Membrane Scaffold Protein 1E3D1 D73C
SIGMA/MSP09 - recombinant, expressed in E. coli, Cysteine substituted at position 73
Product Type: Chemical
Protein Maps of Apolipoprotein A-1 and MSP1E3D1 D73C. The original MSP1 sequence omits the Globular Region N-terminal domain of native Apo A-1. MSP1D1 deletes the first 11 amino acids in the Helix 1 portion (H0.5 in the figure) of the original MSP1 sequence. MSP1E3D1 repeats the Helix 4 (H4), Helix 5 (H5) and Helix 6 (H6) sequences of the original MSP1 sequence between the parent Helix 6 (H6) and Helix 7 (H7) segments of MSP1D1. MSP1E3D1 D73C substitutes a cysteine (C) for an aspartic acid (D) at position 73 of the original native A-1 sequence, within the Helix 2 segment (H2) of the protein (H2 D73C in the figure). In addition, the initial histidine-tag is one amino acid shorter.
Fifteen different Membrane Scaffold Protein Constructs are available for applications that require tagging, chemical modifications and acommodations for various size membrane proteins.
| assay | ≥90% (SDS-GE) |
| form | buffered aqueous solution |
| Quality Level | 200  |
| recombinant | expressed in E. coli |
| shipped in | ambient |
| storage temp. | −20°C |
| Application: | For guidelines on the use of this and other MSP′s to prepare Nanodiscs, please visit our Protocols for Membrane Scaffold Proteins and Nanodisc Formation page . |
| General description: | Nanodisc technology is an approach to render membrane proteins soluble in aqueous solutions in a native-like bilayer environment, where the membrane proteins remain stable and active. The Nanodisc concept is derived from high density lipoprotein (HDL) particles and their primary protein component, apolipoprotein. The Nanodisc is a non-covalent structure of phospholipid bilayer and membrane scaffold protein (MSP), a genetically engineered protein, which mimics the function of Apolipoprotein A-1 (ApoA-1). The first MSP, MSP1, was engineered with its sequence based on the sequence of A-1, but without the globular N-terminal domain of native A-1. The MSP1E3D1 D73C variant of MSP1 differs from MSP1 in the following facets: • It deletes the first 11 amino acids in the Helix 1 portion (referred to as “H0.5” in the accompanying figure) of the original MSP1 sequence3 (which is known separately as MSP1D1). • It repeats the Helix 4 (H4), Helix 5 (H5) and Helix 6 (H6) sequences of the original MSP1 sequence between the parent Helix 6 (H6) and Helix 7 (H7) segments of MSP1D1. • It substitutes a cysteine (C) residue for an aspartic acid (D) residue in the Helix 2 (H2) portion of the protein, at position 73 of the original native A-1 sequence. • The initial histidine-tag is one amino acid shorter. |
| Legal Information: | Nanodisc technology, and many of its uses, are covered by the following patents held by the University of Illinois. • 7,691,414 Membrane scaffold proteins • 7,662,410 Membrane scaffold proteins and embedded membrane proteins • 7,622,437 Tissue factor compositions and methods • 7,592,008 Membrane scaffold proteins • 7,575,763 Membrane scaffold proteins and tethered membrane proteins • 7,083,958 Membrane scaffold proteins • 7,048,949 Membrane scaffold proteins |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 2 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥90% (SDS-GE) |
| Storage Temp. | −20°C |
| UNSPSC | 12352200 |