2MKB:
reference: NS2 proteins of GB virus B and hepatitis C virus share common protease activities and membrane topologies., Boukadida C, Marnata C, Montserret R, Cohen L, Blumen B, Gouttenoire J, Moradpour D, Penin F, Martin A, J Virol. 2014 Apr 16. PMID: 24741107

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