437600

LPD-12

A water soluble, amphiphilic α-helical lipopeptide detergent (LPD) that forms small micelles and effectively mimics lipid bilayers.

• Synonym(s): LPD-12, Lipopeptide Detergent-12, Ac-AO(C₁₂)AEAAEKAAKYAAEAAEKAAKAO(C₁₂)A-NH₂
• Empirical Formula (Hill Notation): C₁₃₁H₂₂₄N₃₂O₃₇
• Molecular Weight: 2839.37
• UNSPSC Code: 12352200

Properties

• Quality Level: 100
• assay: ≥95% (HPLC)
• form: lyophilized
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze; desiccated (hygroscopic)
• color: white
• CMC: <1 μM
• solubility: water: 100 mg/mL
• shipped in: ambient
• storage temp.: 2-8°C

Description

General description

A water soluble, amphiphilic α-helical lipopeptide detergent (LPD) that forms small micelles and effectively mimics lipid bilayers (solubility in PBS ~ 40 mM; micelle MW ~ 23,100; aggregation number ~ 8.1; partial specific volume ~ 0.77 cm³/g). Shown to not only solubilize but also stabilize bacteriorhodopsin, lactose permease and E. coli PagP protein ([LPD] ~ 250 µM and [protein] ~ 22 µM) by forming complexes and precluding aggregation. Useful for NMR and X-ray structural studies of membrane proteins.

Packaging

Packaged under inert gas

Warning

Toxicity: Irritant (B)

Sequence

Ac-Ala-Orn(dodecanoyl)-Ala-Glu-Ala-Ala-Glu-Lys-Ala-Ala-Lys-Tyr-Ala-Ala-Glu-Ala-Ala-Glu-Lys-Ala-Ala-Lys-Ala-Orn(dodecanoyl)-Ala-NH₂

Physical form

Supplied as a trifluoroacetate salt.

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Other Notes

McGregor, C.L., et al. 2003. Nat. Biotechnol.21, 171.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable