TABLE 1

Characterization of the generated mutants

Relevant genotype of strainDeleted gene(s)Magnetic response (Cmag)aAvg magnetosome size (nm)aMagnetosome size (% of WT)No. of magnetosomes per cellaMaximum size (nm)
WT2.0 ± 0.135.6 ± 13.010034.3 ± 8.469.2
ΔA10mms6 operonIntermediate19.7 ± 6.955.316.8 ± 6.239.6
Δmms6mms6WT30.4 ± 9.085.429.7 ± 6.257.3
ΔmmsFmmsFIntermediate28.6 ± 8.080.330.4 ± 7.460.9
Δmms48mms48WT46.4 ± 14.8130.316.0 ± 5.682.8
Δmms36mms36WT39.1 ± 12.9109.822.2 ± 7.367.6
ΔmamFmamFWT33.6 ± 10.494.433.6 ± 10.464.9
ΔmmsF ΔmamFmmsF, mamFWT25.0 ± 7.470.226.6 ± 9.347.4
ΔmmsF Δmms6mmsF, mms6Intermediate24.1 ± 6.467.724.1 ± 6.844.8
WT::mms36WT34.6 ± 9.297.231.6 ± 10.157.2
WT::mms48WT33.2 ± 8.293.340.2 ± 10.558.0
ΔmamImamINone14.8 ± 7.141.69.9 ± 4.334.4
ΔmamLmamLNone
ΔmamNmamNWeak17.7 ± 7.149.711.0 ± 7.441.3
ΔmamPmamPIntermediate21.9 ± 15.361.519.3 ± 10.072.8
ΔmamAmamAWT35.2 ± 13.198.910.2 ± 4.773.4
ΔmamQmamQNone
ΔmamRmamRWT29.0 ± 11.081.533.5 ± 10.570.2
ΔmamSmamSWT22.0 ± 7.561.834.8 ± 12.044.2
ΔmamTmamTWT28.9 ± 10.381.232.0 ± 8.260.1
ΔmamUmamUWT37.3 ± 13.0104.831.8 ± 8.465.3
  • a Values are means ± standard deviations.