Sr. No.

Source

Emm type

                       Fibronectin binding protein genes                             Adherence

sci A

sci B

sfb

sfb2

prtF1

prtF2

prtF15

fba

pfbp

Giemsa

FACS

1

Throat

81.1

+

+

+

-

+

-

+

+

-

2+

26.70%

2

Throat

81.1

+

+

+

-

-

-

+

+

-

1+

13.80%

3

Throat

81.1

+

+

+

-

-

-

+

+

-

1+

13.60%

4

Throat

81.1

+

+

+

-

+

-

+

+

-

2+

27.73%

5

Throat

81.1

+

+

+

-

+

-

+

+

-

2+

23.40%

6

Throat

81.1

+

+

+

-

-

-

+

+

-

1+

12.60%

7

Throat

81.1

+

+

+

-

-

-

+

+

-

1+

13.40%

8

Skin

81.1

-

+

+

-

-

-

+

+

-

1+

17.75%

9

Skin

81.1

+

+

+

-

-

+

+

-

-

1+

9.40%

10

Skin

81.1

+

+

+

-

+

-

+

+

-

2+

24.40%

11

Skin

81.1

+

+

+

-

+

-

+

+

-

2+

26.70%

12

Skin

81.1

+

+

+

-

-

-

+

+

-

1+

17.70%

13

Skin

81.1

-

+

-

-

-

-

+

+

-

1+

8.50%

14

Skin

81.2

-

+

+

-

-

-

+

+

-

1+

22.68%

15

Control

1

+

+

-

-

-

-

-

+

-

 

 

 

%

81

78.6

100

92.9

0

35.2

7.1

100

92.9

0

 

 
Note: Fbp genes +: presence; - : absence 2+: moderate adherence; 1+: low adherence when compared to standard reference M1 GAS strain
Table 1: Distribution of fibronectin binding protein genes and adherence potential of isolated emm 81 GAS isolates.