Analysis of the predicted amino acid sequence suggests that overall protein structure is conserved , but the receptor binding sites are not .
analysis of the predicted amino acid sequence suggests that overall protein structure is conserved , but the receptor binding sites are not .
O O O B-protein_N/A I-protein_N/A I-protein_N/A I-protein_N/A O O O B-protein_substructure I-protein_substructure O O O O O O O O O O O