Patent ID: 9611303
Date: 2017-04-04
CPC Classifications: C07K,G01N

Claim:
1. A protein comprising an amino acid sequence represented by SEQ ID NO: 2, or an amino acid sequence having an identity of not less than 95% to the amino acid sequence of SEQ ID NO: 2, the protein having replacement selected from the group consisting of: 1) replacement of the 36th serine residue of SEQ ID NO: 2 with an amino acid residue that does not form a hydrogen bond and replacement of the 116th aspartic acid residue of SEQ ID NO: 2 with an amino acid that does not form a hydrogen bond; and 2) replacement of the 36th serine residue of SEQ ID NO: 2 with an amino acid residue that does not form a hydrogen bond, replacement of the 78th threonine residue of SEQ ID NO: 2 with an amino acid residue that does not form a hydrogen bond, and replacement of the 116th aspartic acid residue of SEQ ID NO: 2 with an amino acid that does not form a hydrogen bond.