Table 1.

Copy numbers of human mitochondrial mRNAs in HeLa cells

mRNA	Copy numbers/cell	Half-life (min) (5)
ND1	38 000 ± 1600	74 ± 2
ND2	26 000 ± 1600	80 ± 6
COX1	37 000 ± 490	166 ± 29
COX2	51 000 ± 480	231 ± 18
ATP8/6	47 000 ± 1300	175 ± 13
COX3	34 000 ± 600	138 ± 10
ND3	15 000 ± 850	91 ± 4
ND4L/4	32 000 ± 1900	183 ± 5
ND5	6000 ± 73	77 ± 7
CYTB	16 000 ± 840	94 ± 24
ND6	14 000 ± 290	68 ± 10