TY - JOUR
T1 - Comparative biochemical studies of ATPases in cells from patients with the T8993G or T8993C mitochondrial DNA mutations
AU - Vázquez-Memije, M. E.
AU - Shanske, S.
AU - Santorelli, F. M.
AU - Kranz-Eble, P.
AU - Devivo, D. C.
AU - Dimauro, S.
PY - 1998
Y1 - 1998
N2 - We performed comparative biochemical studies in cultured fibroblast mitochondria from patients with the T8993G or the T8993C point mutations in the ATPase 6 gene of mitochondrial DNA. We found that ATP production was much more severely decreased in cells from patients with the T8993G mutation than in those from patients with the T8993C mutation. Kinetic studies suggest that both mutations affect only the F0 sector of the mitochondrial ATPase complex. We conclude that these two mutations, which result in the substitution of different amino acids at the same site of the ATPase, result in an enzyme with different biochemical characteristics.
AB - We performed comparative biochemical studies in cultured fibroblast mitochondria from patients with the T8993G or the T8993C point mutations in the ATPase 6 gene of mitochondrial DNA. We found that ATP production was much more severely decreased in cells from patients with the T8993G mutation than in those from patients with the T8993C mutation. Kinetic studies suggest that both mutations affect only the F0 sector of the mitochondrial ATPase complex. We conclude that these two mutations, which result in the substitution of different amino acids at the same site of the ATPase, result in an enzyme with different biochemical characteristics.
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U2 - 10.1023/A:1005418718299
DO - 10.1023/A:1005418718299
M3 - Article
C2 - 9870208
AN - SCOPUS:0031738945
SN - 0141-8955
VL - 21
SP - 829
EP - 836
JO - Journal of Inherited Metabolic Disease
JF - Journal of Inherited Metabolic Disease
IS - 8
ER -