Abstract:
:Hyperthyroid mitochondria show an increased Km and Vmax in the high affinity phase of cytochrome oxidase kinetics. During inhibitor titrations, cytochrome c shows a different redox behaviour in hyperthyroid with respect to protonophore-treated euthyroid mitochondria. The observations are discussed in terms of a different regulation of electron input and output into the respiratory chain during slip and leak types of uncoupling. In hyperthyroid mitochondria during inhibitor titrations, the pattern of the relationship between uncoupler-induced extra-respiration and membrane potential is highly non-linear. The complex nature of the respiratory stimulation in hyperthyroid mitochondria is discussed.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Schmehl I,Luvisetto S,Canton M,Gennari F,Azzone GFdoi
10.1016/0014-5793(95)01211-vsubject
Has Abstractpub_date
1995-11-20 00:00:00pages
206-10issue
3eissn
0014-5793issn
1873-3468pii
0014-5793(95)01211-Vjournal_volume
375pub_type
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