Table 1.

Comparison of the CD Spectrum of Tom40 with that of TOM Core Complex and Mitochondrial Porin

Protein	λ crossover	λ min	ΘR min	α-Helix	β-Sheet + turn	Other
	nm		10−3 deg cm2 dmol−1	%	%	%
Tom40	202	216.5	−11.7	32	22	46
TOM core complex	202	210 and 226	−5.6	ND	ND	ND
VDAC (mitochondrial porin)	206	216.0	−3.4	15	46	34

The secondary structure estimates were computed from CD spectra of Tom40 and mitochondrial porin of N. crassa in 0.1% DDM as described in Materials and Methods. The content of α-helix and β-sheet was estimated for Tom40 and mitochondrial porin only, since the protein concentration of the TOM core complex could not be determined with the required accuracy.