Strikingly , deletion of 346 C-terminal residues augmented this activity , whereas removal of 20 additional residues abolished it .
strikingly , deletion of 346 c-terminal residues augmented this activity , whereas removal of 20 additional residues abolished it .
O O O O B-protein_domain_or_region I-protein_domain_or_region I-protein_domain_or_region O O O O O O O O O O O O O