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. Author manuscript; available in PMC: 2012 Feb 5.

Published in final edited form as: Virology. 2010 Nov 11;410(1):1–6. doi: 10.1016/j.virol.2010.10.027

Table 1.

Comparison of the avian-origin Tx/98 and swine-origin 1930 PB2 at the amino acid level

22^*

64

65

66

82

114

122

136

147

184

199

225

243

265

271

312

382

Tx/98 PB2

K

M

D

M

N

V

V

R

T

T

A

G

M

N

A

E

I

1930 PB2

R

I

E

T

S

I

A

G

I

M

S

S

L

S

T

K

V

421

467

468

475

478

480

539

588

590

591

627

637

645

660

661

684

702

Tx/98 PB2

V

M

I

L

I

V

I

T

S

R

E

T

L

K

A

A

K

1930 PB2

I

L

T

M

V

I

V

A

G

Q

K

A

M

R

T

T

R

^*

Position of the amino acid