Table 1.

Characterization of Mdv1 suppressors of the dnm1F610A allele

Mutations WT mitochondrial morphologya GFP mitochondrial punctab Interaction with Dnm1c 
 DNM1 mdv1Δ dnm1F610A mdv1Δ Dnm1 Dnm1F610A Dnm1 Dnm1F610A 
 % %     
Mdv1 67 ± 7 0 ± 0 − 
Y418C 6 ± 3 41 ± 16 ++ 
K430R 9 ± 8 28 ± 4 − 
E504G 19 ± 8 32 ± 16 ++ − 
D539G 9 ± 2 68 ± 11 ++ 
D539Y 11 ± 1 61 ± 14 ++ 
L540P 12 ± 5 58 ± 14 ++ 
S541G 8 ± 4 38 ± 12 ++ 
S557C 9 ± 8 45 ± 8 ++ 
T558I 10 ± 8 34 ± 6 ++ 
D576G 68 ± 17 53 ± 9 − − 
D585G 45 ± 3 30 ± 8 − − 
D607G 15 ± 6 31 ± 12 ++ − 
Mutations WT mitochondrial morphologya GFP mitochondrial punctab Interaction with Dnm1c 
 DNM1 mdv1Δ dnm1F610A mdv1Δ Dnm1 Dnm1F610A Dnm1 Dnm1F610A 
 % %     
Mdv1 67 ± 7 0 ± 0 − 
Y418C 6 ± 3 41 ± 16 ++ 
K430R 9 ± 8 28 ± 4 − 
E504G 19 ± 8 32 ± 16 ++ − 
D539G 9 ± 2 68 ± 11 ++ 
D539Y 11 ± 1 61 ± 14 ++ 
L540P 12 ± 5 58 ± 14 ++ 
S541G 8 ± 4 38 ± 12 ++ 
S557C 9 ± 8 45 ± 8 ++ 
T558I 10 ± 8 34 ± 6 ++ 
D576G 68 ± 17 53 ± 9 − − 
D585G 45 ± 3 30 ± 8 − − 
D607G 15 ± 6 31 ± 12 ++ − 
a

Numbers are the mean and standard deviation of at least three independent experiments, n = 300.

b

+, GFP puncta localized to mitochondrial tubules.

c

Yeast two-hybrid assays. −, No growth on His or Ade minus medium; +, growth on His but not Ade minus medium; ++, growth on both His and Ade minus media. Growth on Ade minus medium is the more stringent indicator of protein–protein interaction.

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