Protein S100-A10, Calpactin I light chain, Calpactin-1 light chain, S100A10, ANX2LG, CAL1L, CLP11,
S100A10 acts as a cellular chaperone for hepatitis B (Hep B) virus polymerase. Hep B virus polymerase normally localizes to the cytoplasm only, though in the presence of S-100A10 a portion relocates to the nucleus, implying a role for S100A10 and intracellular calcium in the process of viral replication.