TABLE 2.

LC-MS analysis to determine ion counts for selected ionsa

StrainIon count for ions at a mass (Da) of:
263.128b247.133c265.144d
ATCC 580251,33040129
ATCC 580251,3904369
ΔBcaba3-4NDNDND
ΔBcaba3-7NDNDND
ΔBcaba1-2NDNDND
ΔBcaba1-27NDNDND
ΔBcaba2-2ND1,550ND
ΔBcaba2-13ND2,060ND
ΔBcaba4-5.16651355,420
ΔBcaba4-9.27622717,850
  • a A 50-ppm width. Counts below 40 were regarded as noise. ND, not detected.

  • b Retention time of 6.45 min.

  • c Retention time of 8.38 min.

  • d Retention time of 5.36 min.