Table 1. Peaks identified to separate the clusters.

Peak Position	Cluster 1	isolates 11 and 12	Cluster 2	Possible proteins (from TagIdent)
3444	Yes	Yes	No	Protamine-like protein
5873	Yes	Yes	No	Regulatory protein MokB
6539	Yes	No	No	50S ribosomal protein L30
7173	Yes	No	No	Pilin; Protein CopA/IncA
7650	No	No	Yes	Response regulator inhibitor for tor operon; Protein KleB; Protein IscX; Cold shock-like protein CspH
7708	Yes	Yes	No	Response regulator inhibitor for tor operon; Protein KleB; Protein IscX; Cold shock-like protein CspH
8326	Yes	Yes	No	Tautomerase PptA; Dihydrofolate reductase type 2; Ferrous iron transport protein A
8350	No	No	yes	Tautomerase PptA; Dihydrofolate reductase type 2; Ferrous iron transport protein A
9712	No	No	yes	30S ribosomal protein S17; Regulatory protein AriR; UPF0386 protein YjhX; Acid stress chaperone HdeA
9739	Yes	Yes	No	30S ribosomal protein S; Regulatory protein AriR 17; UPF0386 protein YjhX; Acid stress chaperone HdeA
10463	Yes	Yes	No	30S ribosomal protein S19; Sugar fermentation stimulation protein B
10489	No	No	Yes	30S ribosomal protein S19; Sugar fermentation stimulation protein B