. "The VHL component of the VHL:ElonginB:ElonginC:CUL2:RBX1 binds HIF-alpha that have hydroxylated proline residues (Cockman et al. 2000, Ohh et al. 2000, Tanimoto et al. 2000, Jaakkola et al. 2001, Ivan et al. 2001, Yu et al. 2001, Bonicalzi et al. 2001). The VHL:HIF-alpha complex is predominantly nuclear (Lewis and Roberts 2003) however binding and degradation of HIF-alpha can also occur in the cytosol (Berra et al. 2001)."^^ . . . . . . . . . . . . . .