Akuzawa R, Yagi N, Kimura M, Okitani A (1994) Purification and characterization of a serine proteinase from Lactococcus lactis spp lactis IAM 1198. Anim Sci Techno1. 65:22-32.
Akuzawa R, Okitani A (1995) Purification and characterization of a cysteine proteinase with low activation energy from Lactococcus lactis spp. lactis IAM 1198. J Dairy Sci. 78:2609-2616.