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Table 1 Kinetic and thermodynamic parameters of fungal Tpi1 binding by ECM proteins, determined by SPR measurements

From: Candida albicans and Candida glabrata triosephosphate isomerase – a moonlighting protein that can be exposed on the candidal cell surface and bind to human extracellular matrix proteins

ECM protein

ka (1/Ms)

kd (1/s)

KD (M)

C. albicans Tpi1

 VTR

1.02 x 105 ± 3.16 x 103

8.77 x 10-3 ± 7.40 x 10-4

8.60 x 10-8 ± 5.28 x 10-9

 FN

3.22 x 104 ± 3.99 x 103

1.05 x 10-2 ± 5.08 x 10-4

3.26 x 10-7 ± 2.73 x 10-8

 LAM

4.42 x 104 ± 4.09 x 103

3.27 x 10-2 ± 1.68 x 10-3

7.39 x 10-7 ± 7.99 x 10-8

 COL

1.82 x 104 ± 2.48 x 103

1.99 x 10-3 ± 3.10 x 10-4

1.09 x 10-7 ± 9.16 x 10-9

 ELA

4.65 x 104 ± 7.79 x 103

3.82 x 10-2 ± 1.56 x 10-3

8.21 x 10-7 ± 8.04 x 10-8

C. glabrata Tpi1

 VTR

1.84 x 104 ± 9.84 x 102

3.10 x 10-3 ± 1.04 x 10-3

1.68 x 10-7 ± 4.13 x 10-9

 FN

6.48 x 104 ± 5.23 x 103

4.73 x 10-2 ± 1.36 x 10-3

7.30 x 10-7 ± 7.24 x 10-9

 LAM

1.34 x 104 ± 4.05 x 103

3.39 x 10-3 ± 2.62 x 10-4

2.53 x 10-7 ± 3.18 x 10-8

 COL

1.44 x 104 ± 1.90 x 103

3.08 x 10-3 ± 2.91 x 10-4

2.14 x 10-7 ± 2.86 x 10-8

 ELA

9.51 x 104 ± 4,83 x 103

1.91 x 10-3 ± 9.04 x 10-5

2.01 x 10-8 ± 1.97 x 10-8

  1. The binding parameters for interactions between fungal proteins and human ECM proteins were determined after global fitting of the data with a 1:1 Langmuir binding model. All parameters are presented with standard errors