TABLE 4.

Proteins identified by MS/MS in bands from native PAGE gels separating soluble and excreted protein fractions from Erythrobacter sp. strain SD-21 (see Fig. 4)

Protein	Total no. of spectra	Accession no.	Predicted molecular mass (kDa)
Soluble proteins in Mn in-gel activity assay
Animal heme peroxidase	7	ZP_01865380	225
Peptidoglycan-associated protein	1	ZP_01863706	39
TonB-dependent receptor	1	ZP_01864457	97
Excreted proteins in Mn in-gel activity assay
Animal heme peroxidase	30	ZP_01865380	225
Peptidoglycan-associated protein	3	ZP_01863706	39
Curli production assembly	2	ZP_01864079	35
TonB siderophore receptor	2	ZP_01865221	77
Protein of unknown function	2	ZP_01865209	119
Phenyl HP-enriched Coomassie-stained bands
Animal heme peroxidase	31	ZP_01865380	225
Protein of unknown function	1	ZP_01862549	35