Table 1.

Summary of mass spectrometry results.

GeneCommon nameAccession no.Molecular weight (kD)Myosin molecules per protein molecule (myofibril)Myosin molecules per protein molecule (filamentsa)
FlnFlightinP3555420,6561.3 ± 0.41.5 ± 0.5
MfMyofilinQ9VFC7; C1C55341,6672.0 ± 0.72.0 ± 0.6
strn-mlckStretchin-mlckA1ZA73215,0653.4 ± 1.17.9 ± 2.5
PrmParamyosinP35415102,33823.5 ± 7.930.5 ± 9.6
PrmMiniparamyosinP35416; M9NDM674,2779.7 ± 3.314.7 ± 4.6
BtProjectinL0MN91992,52730 ± 10Not detected
SlsTitin/kettinQ9I7U4-2548,59834 ± 12Not detected
unc-89ObscurinA8DYP0475,00042 ± 1462 ± 20
  • a Sufficient specimen for only a single measurement. Uncertainties were determined from variability between the relative ratios generated using peptides from the myosin heavy chain, essential, and regulatory light chains.