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Table 2 Notable mutation sites in cs2301

From: Isolation and genetic characteristics of Novel H4N1 Avian Influenza viruses in ChongQing, China

Gene

Reference

Mutation

Structural interaction(s)

Multiple position effect

Prev. reported effect

HA

A/Duck/HongKong/24/1976(H4N2)

V98I, S342A

â‘£

-

-

I106V

④⑤

-

-

T140S

④⑤⑥

â‘ 

-

E173A

④⑤⑥

â‘ â‘¡â‘¢

â‘ â‘¡â‘¢

T105A, I182V

④⑤⑥

-

-

PB2

K340R, L464M

â‘£

-

-

I292V

-

-

â‘ 

NA

A/Duck/Taiwan/0526/1972(H6N1)

I75L, I188T, G189S, F445L

â‘£

-

-

D309N

④⑤

-

-

N222D

④⑤⑥

â‘¡â‘¢

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S248N

④⑤⑥⑦

⑧

-

S449N

④⑤⑩

-

-

I2N, T48P, T94I, I234V, D273N,

V288I, I289M, R352K, K355N

⑤

-

-

P51Q

⑨

-

-

MP

K101R, P121T, Q72R

â‘£

-

-

  1. ①host specificity shift,②antigenic drift,③immune escape,④viral oligomerization interfaces,⑤binding other viral protein(s),⑥antibody recognition sites,⑦drug binding,⑧mild drug resistance,⑨creates a new potential N-glycosylation site⑩others