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Table 4 Differentiating peaks based on the statistical analysis of ClinProTools within the species L. interrogans and L. kirschneri

From: Leptospira spp. strain identification by MALDI TOF MS is an equivalent tool to 16S rRNA gene sequencing and multi locus sequence typing (MLST)

genomospecies peak mass (m/z) representing the protein size in Dalton
3,206 3,220 3,234 3,636 3,657 5,526 6,191 6,327 7,358 8,097
L. interrogans Hebdomadis - - - - - + + - + -
L. interrogans Australis - - - - - - + - + -
L. interrogans Autumnalis - - - - - + + - + -
L. interrogans Bratislava - - - - - + + - + -
L. interrogans Canicola - - - - - + + - + -
L. interrogans Copenhageni - - - ++ ++ + + + - -
L. interrogans Hardjo - - - - - + + - + -
L. interrogans Pomona ++ ++ ++ - - + + + - -
L. interrogans Pyrogenes - - - - - + + - + -
L. interrogans Icterohaemorrhagiae - - - - - + + + - -
L. interrogans Bataviae - - - - - + + - + -
L. kirschneri Grippotyphosa - - - - - + - - + +
  1. The displayed peaks are based on visual comparison of the algorithms analysis results of the software. All strains were screened twice using the QuickClassifier (QC)/Different average and SNN algorithms.
  2. The used symbols stand for:
  3. no peak found: -
  4. peak present: +
  5. peak set with high intensity: ++