tokens: From information available in the literature on the substrate specificity of the three enzymes , it is clear that a cysteine is not accepted in any of the S2 , S1 , S1' , and S2' subsites of cathepsin B and L , and not in the S1 and S1' subsites of cathepsin D .
folded_tokens: from information available in the literature on the substrate specificity of the three enzymes , it is clear that a cysteine is not accepted in any of the s2 , s1 , s1' , and s2' subsites of cathepsin b and l , and not in the s1 and s1' subsites of cathepsin d .
labels: O O O O O O O O B-other_name I-other_name O O O B-protein_family_or_group O O O O O O B-amino_acid_monomer O O O O O O O O O O O O O O O O O O O O O O O O O O B-protein_domain_or_region O B-protein_domain_or_region O O B-protein_domain_or_region I-protein_domain_or_region O