Purity > 90% as determined by SDS-PAGE. MW: 60.9kDa. Full Length of Mature Protein: 44-556aa. N-terminal 6xHis-tagged. Porphyromonas gingivalis (strain ATCC BAA-308 / W83). Deiminates the guanidino group of C-terminal arginine residues on a variety of peptides, including the vasoregulatory peptide-hormone bradykinin, to yield ammonia and a citrulline residue. May promote the growth of the pathogen in the periodontal pocket by producing ammonia, ammonia having a protective effect during acidic cleaning cycles in the mouth.