Far UV-CD spectra of the GpA TM domain in 20 mM lyso-PCs. C10-lysoPC (black), C11-lysoPC (red), C12-lysoPC (green), C13-lysoPC (blue), C14-lysoPC (cyan), C15-lysoPC (magenta), and C16-lysoPC (yellow). The measured ellipticities were converted to molar ellipticity as described in Materials and Methods.