Thermostability of the mitochondrial ADP/ATP
carrier and uncoupling
protein in different detergents. Carrier unfolding was monitored by
the fluorescence of CPM-adduct formation at cysteine residues as they
become solvent-exposed due to thermal denaturation.153,154 (A) Thermal denaturation profile (top) and corresponding first derivative
(bottom) of native yeast ADP/ATP carrier AAC3 diluted into assay buffer
in DDM in the absence (solid line) or presence (dashed line) of CATR.
(B) Same as in (A), but with AAC3 diluted in DPC. (C) Apparent melting
temperatures (TM) of native yeast ADP/ATP
carrier AAC2 with or without bound CATR diluted in octyl to tridecyl
maltoside (8M-13M), Cymal4–7, dodecyl and decyl maltose neopentyl
glycol (12MNG and 10MNG), octyl glucose neopentyl glycol (8GNG), LAPAO,
and DPC. (D) Thermal denaturation profile of native uncoupling protein
UCP1 in decyl-maltose neopentyl glycol (10MNG) (top) and corresponding
first derivative (bottom) in the absence (solid line) or presence
(dashed line) of GDP. (E) Same as in (D), but with native UCP1 in
DPC. The apparent melting temperatures are reported in the derivative
profiles. Data are from refs (146) and (154).