The primary sequence length of the protein is 272 amino acids, it also includes the signal peptide of 20-mer residues.

Sequences collected from seven different databases were stored together in a non-redundant database. A total of 23 sequences were reported and two species of Bacteroides were included, 22 sequences isolated from Bacteroides fragilis and one isolated from Bacteroides cellulosilyticus. The Renaming was done following a new nomenclature system.