Host proteins already known to interact with NS5A and/or the HCV life cycle identified by SILAC and GeLC-MS.

Proteins that specifically bind to NS5A(SF) will have incorporated heavy amino acids and thus will have a high heavy∶light (H/L) peptide ratio. PEP (Posterior error probability) refers to the probability that a peptide-spectrum match is incorrect. Intensity refers to total summed peptide intensity for the identified protein group.