Table 3

Amount of ergothioneine detected in different fractions in various M. smegmatis strains at an OD600 of 1

FractionERG concn (pg/105 CFU) ± SD
mc2155ΔmshAΔegtDΔmshA ΔegtDΔegtDcaΔmshA ΔegtDca
Intracellular1.74 ± 0.36.3 ± 2.6000.88 ± 0.32.2 ± 0.5
Extracellular7.6 ± 1.539 ± 10.5004.3 ± 216 ± 5.1
  • a ΔegtDc, complemented egtD mutant (ΔegtD attB::pMV306D; see Table S1 in the supplemental material); ΔmshA ΔegtDc, complemented ΔmshA ΔegtD mutant (ΔmshA ΔegtD::pMV306D; see Table S1 in the supplemental material).