Peptide Binding to TCDD Assessed by ELISA

Example 1

Each of the peptides having amino acid sequences of SEQ ID NOS: 1, 2, and 3 mixed with a coating buffer (20 mM sodium phosphate, pH 9.6) at a concentration of 1.8 mM was seeded on a plate for an enzyme-linked immunosorbent assay (ELISA) and cultured at 4° C. overnight. Subsequently, the peptide was washed with phosphate buffered saline with Tween-20 (PBST) and blocked with 3% of bovine serum albumin (BSA) for 2 hours at room temperature. After washing with PBST, 2 μM of 2,3,7,8-tetrachlorodibenzo-p-dioxin (hereinafter, referred to as TCDD) was added to each well and cultured at room temperature for 2 hours. Subsequently, after washing with PBST, treatment with anti-TCDD antibody conjugated with fluorescein isothiocyanate (FITC) was conducted at a ratio of antibody:PBST=1:100 and the resultant was cultured for 2 hours at room temperature. Then, after washing with PBST, an excitation 488 nm/emission 520 nm value was measured using a fluorescence meter, and the results are shown in FIGS. 1A to 1C, and Table 2.

As shown in FIGS. 1A to 1C and Table 2, it was confirmed that the peptide consisting of an amino acid sequence of SEQ ID NO: 1, 2, or 3 directly binds to TCDD.