Hemoglobin receptor protein is intragenially encoded by the cysteine proteinase-encoding genes and the hemagglutinin-encoding gene of Porphyromonas gingivalis - Nakayama,K.; Ratnayake,D.B.; Tsukuba,T.; Kadowaki,T.; Yamamoto,K.; Fujimura,S. (Mol Microbiol, 1998)