4cbl

Structural highlights

Function

[POLG_CSFVA] E(rns), E1 and E2 are responsible of cell attachment and subsequent fusion of viral and cellular membrane. P7 forms a leader sequence to properly orient NS2 in the membrane. Uncleaved NS2-3 is required for production of infectious virus. NS2 protease seems to play a vital role in viral RNA replication control and in the pathogenicity of the virus.[PROSITE-ProRule:PRU01029] NS3 displays three enzymatic activities: serine protease, NTPase and RNA helicase. NS4A is a cofactor for the NS3 protease activity. RNA-directed RNA polymerase NS5 replicates the viral (+) and (-) genome.[PROSITE-ProRule:PRU00539]