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Table 1 Cell surface hydrophobicity of GAS strains

From: The streptococcal collagen-like protein-1 (Scl1) is a significant determinant for biofilm formation by group a Streptococcus

GAS Strain M-Type Actual Value Hydrophobicity Index
MGAS6183 WT M41 92.6 ± .86 100
MGAS6183 Δscl1 M41 85.2 ± 2.2 **92
MGAS6183 Δscl1-C M41 98.0 ± .31 105
MGAS5005 WT M1 80.3 ± .89 100
MGAS5005 Δscl1 M1 63.3 ± 3.2 **79
MGAS6143 WT M28 94.3 ± .73 100
MGAS6143 Δscl1 M28 72.6 ± .62 **78
  1. Actual hydrophobicity values were calculated based on hexadecane binding as described in Methods. Values are representative of three separate experiments with ten replicates ± SD
  2. Hydrophobicity Index represents the ration of actual hydrophobicity value for each strain to that of the isogenic wild-type (WT) strain multiplied by 100
  3. ** Asterisks denote a statistically significant difference of Δscl1 mutants versus WTs at P ≤ 0.001