The amplified product showed an identical nucleotide sequence to the DNA-binding domain of the human intestinal receptor .
the amplified product showed an identical nucleotide sequence to the dna-binding domain of the human intestinal receptor .
O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O B-protein_domain_or_region I-protein_domain_or_region O O B-protein_molecule I-protein_molecule I-protein_molecule O