Table 2: Domain and functional groups associated with each cysteine-abundance and distribution-pattern detected in pathogenic and nonpathogenic Proteobacteria.

PatternsFunctional categoryDomains

Pattern-ILipoproteinsCsgG, Lipoprotein_9, Lipoprotein_18, LolB, VacJ
Part of protein-secretion systemsCagX, FliP, MCE, TolB_N

Pattern-IIEndopeptidase inhibitory activityA2M_N
Generation of reduced environment in periplasmDsdB
Protein insertion into membranes60KD_IMP

Pattern-IIIAdhesinHaemagg_act, Pertactin, Autotransporter
InvasinIalB
HemolysinPOTRA_2, ShlB
EnzymePLA1, Acid_phosphatase_A, AlkPPc, Glyco_hydro_3, Hydrolase 2, Peptidase_S13
Surface antigenBac_surface_Ag, BMP, Surface_Ag_2
Membrane transporterLamB