TABLE 1.

N. meningitidis mutant strains used in this study

Strain	Genotype	Parent strain	Reference
HT1125	ΔsiaB-ΔsiaD::kan	NIID280	38
HT1414	ΔsiaB-ΔsiaD::kan ΔgltT-ΔgltM::ermC	HT1125	30
HT1156	ΔsiaB-ΔsiaD::kan pilE::ermC	HT1125	38
HT1688	ΔsiaB-ΔsiaD::kan ΔpilV::ermC	HT1125	42
HT1876	ΔsiaB-ΔsiaD::kan ΔgshB::spc	HT1125	This study
HT1520	ΔsiaB-ΔsiaD::kan gltS::spc	HT1125	30