Hepatitis C virus nonstructural protein 3

Nonstructural protein 3 (NS3), also known as p-70, is a viral nonstructural protein that is 70 kDa cleavage product of the hepatitis C virus polyprotein.

It acts as a serine protease.

[1][2] C-terminal two-thirds of the protein also acts as helicase and nucleoside triphosphatase.

[3] First (N-terminal) 180 aminoacids of NS3 has additional role as cofactor domains for NS2 protein.

This virus-related article is a stub.