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Table 4 Analysis of the amino acid sequences of the HA protein of Tunisian isolates with reference strains

From: Genetic evolution of low pathogenecity H9N2 Avian influenza viruses in Tunisia: acquisition of new mutations

 

HA*

Virus

Receptor binding Site (RBS)

Left-edge of

binding pocket

Right-edge of

binding pocket

Connecting peptide

aa sequence

Glycosylation site

at position

 

110

161

163

191

198

202

203

232

236

148

152

333

338

168

A/Ck/TUN/12/2010

P

W

T

H

A

L

Y

N G L I G

G T S K S

P A R S S R

+

A/M B/TUN/51/2010

P

W

T

H

A

L

Y

N G Q I G

G T S K S

P A R S S R

+

A/Av/SA/910136/06

P

W

T

H

T

L

Y

N G L I G

G T S K S

P A R S S R

-

A/Av/SA/910135/06

P

W

T

H

A

L

Y

N G L I G

G T S K S

P A R S S R

-

A/Ck/Du/338/01

P

W

T

H

A

L

Y

N G L I G

G T S K S

P A R S S R

-

A/Ck/Du/339/01

P

W

T

H

A

L

Y

N G L M G

G T S K A

P A R S S R

-

A/Ck/Du/383/02

P

W

T

H

A

L

Y

N G L M G

G T S K A

P A R S S R

-

A/Ck/Du/463/03

P

W

T

H

A

L

Y

N G L M G

G T S K A

P A R S S R

-

A/Ck/Em/R66/02

P

W

T

H

A

L

Y

N G L L G

G T S K A

P A R S S R

-

A/Ck/Is/386/07

P

W

T

H

E

L

Y

N G Q L G

G T S K S

P A R S S R

-

A/Ck/Is/292/08

P

W

T

H

A

L

Y

N G L I G

G T S K S

P A R S S R

+

A/Ck/Pak/UDL-01/0

P

W

T

H

A

L

Y

N G L I G

G T S K S

P A R S S R

+

A/Ck/Pak/UDL-01/08

P

W

T

H

A

L

Y

N G L I G

G T S K S

P A R S S R

-

A/Qu/HK/G1/97

P

W

T

H

A

L

Y

N G L I G

G T S K S

P A R S S R

-

A/DK/HK/Y280/97

P

W

T

H

A

L

Y

N G L I G

G T S K S

P A K S S R

-

A/Ck/HK/G9/97

P

W

T

H

E

L

Y

N D L Q G

G I S R A

P A R S S R

-

 

P

W

T

N

T

L

Y

N G L Q G

G T S K A

P A R S S R

-

 

P

W

T

N

A

L

Y

N G L Q G

G T S K A

P A R S S R

-

  1. *numbering according to H9, -/+ absence or presence of the Glycosylation site.