Table IV.

Phospholipid composition of mitochondria from wild-type Arabidopsis and a knockup mutant

Phospholipids were determined in root mitochondria purified by Percoll density gradient centrifugation. Data are average ± range for duplicate samples. Wild-type and mutant mitochondria had similar total phospholipid contents, as judged from their phospholipid phosphate/protein ratios.

Phospholipid	Wild Type	Mutant
	%
PtdEtn	37.4 ± 0.3	39.4 ± 0.6
Phosphatidylcholine	38.2 ± 1.7	38.6 ± 0.2
Phosphatidylinositol	3.3 ± 0.2	2.5 ± 0.3
Phosphatidylglycerol	0.9 ± 0.5	0.3 ± 0.2
Cardiolipin + Phosphatidate	18.3 ± 0.5	19.3 ± 0
Other	2.0 ± 1.8	0.1 ± 0.1