Table 1. Estimated secondary structure composition of neuronal UCPs in detergents*, in lipid vesicles* and from primary amino acid sequence prediction†.
Protein | Protein environment | α-Helix | β-Strand | Turn | Random | NRMSD |
---|---|---|---|---|---|---|
OG micelles | 63 | 5 | 12 | 19 | 0.014 | |
UCP2 | POPC vesicles | 85 | 3 | 2 | 8 | 0.002 |
Distill prediction | 69 | – | – | – | – | |
OG micelles | 53 | 7 | 16 | 24 | 0.015 | |
UCP4 | POPC vesicles | 80 | 6 | 4 | 11 | 0.009 |
Distill prediction | 70 | – | – | – | – | |
OG micelles | 54 | 9 | 17 | 20 | 0.009 | |
UCP5 | POPC vesicles | 85 | 4 | 3 | 7 | 0.009 |
Distill prediction | 75 | – | – | – | – |
*Deconvolution of CD spectra was performed using the CDSSTR program on the Dichroweb website (see ’Materials and Methods’). The values represent the percentage of secondary structure composition.NRMSD, normalized RMSD, denotes the best fit between the calculated and experimental CD spectra.
†Helical contents of neuronal UCPs were predicted using the Distill prediction program, as described in the ‘Materials and Methods’.