Patent ID: 8461305

Claim:
An L-fucose α1→6 specific lectin that: (1) is extracted from basidiomycete or ascomycete, (2) has a molecular weight by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) of 4,000 to 40,000, (3) has an affinity to an L-fucose α1→6 sugar chain, the affinity being represented by an association constant of 1.0×10 4 M −1 or more (at 25 degrees C.), and (4) has an association constant of 1.0×10 3 M −1 or less (at 25 degrees C.) for a high mannose sugar chain and/or a glycolipid not including the fucose α1→6 sugar chain.