Gold-binding protein and use thereof

摘要

A protein comprises at least an antibody heavy chain variable region (VH) or an antibody light chain variable region (VL). Said antibody heavy chain variable region (VH) or antibody light chain variable region (VL) comprises a region specifically binding to gold of a substrate. The gold forms a portion of a surface of the substrate at K D = 3.0 × 10 -7 M or less. Further, the region specifically binding to gold of a substrate has a sequence of SEQ ID NOs. 1 to 57 except for SEQ ID NO.1.