Bands KS1 ΔAbpA Band 1 50S ribosomal protein L5 Acetyltransferase Hypothetical protein SGO_0483 (Non-secretory) 50S ribosomal protein L5 Band 2 50S ribosomal protein L5 Acetyltransferase Argininosuccinate synthase Cation-transporting ATPase yfgQ (T3 secretion) 50S ribosomal protein L5 Band 3 50S ribosomal protein L5 Isopropylmalateisomerase large subunit Isocitrate dehydrogenase Sortase A - LPXTG cell wall surface protein Beta-N-acetylhexosaminidase (Secreted protein) Isopropylmalateisomerase large subunit 50S ribosomal protein L5 Band 4 50S ribosomal protein L5 Argininosuccinate synthase Peptide chain release factor 1 50S ribosomal protein L5 Acetyltransferase Band 5 50S ribosomal protein L5 General stress protein GSP-781 Cardiolipin synthase (Non-secretory) Hypothetical protein SGO_0483 (Non-secretory) 50S ribosomal protein L5 General stress protein GSP-781

Table 3: MS/MS analysis of amylase-precipitated proteins from KS1 and ΔAbpA. Underlined proteins are differentially precipitated.