Streptogrisin B (EC3.4.21.81, Streptomyces griseus protease B, pronase B, serine proteinase B, Streptomyces griseus proteinase B, Streptomyces griseus proteinase 1, Streptomyces griseus serine proteinase B) is an enzyme.[1][2][3][4][5] This enzyme catalyses the following chemical reaction
^Jurasek L, Fackre D, Smillie LB (September 1969). "Remarkable homology about the disulfide bridges of a trypsin-like enzyme from Streptomyces griseus". Biochemical and Biophysical Research Communications. 37 (1): 99–105. doi:10.1016/0006-291x(69)90885-7. PMID4899581.
^Read RJ, Fujinaga M, Sielecki AR, James MN (September 1983). "Structure of the complex of Streptomyces griseus protease B and the third domain of the turkey ovomucoid inhibitor at 1.8-A resolution". Biochemistry. 22 (19): 4420–33. doi:10.1021/bi00288a012. PMID6414511.
^Greenblatt HM, Ryan CA, James MN (January 1989). "Structure of the complex of Streptomyces griseus proteinase B and polypeptide chymotrypsin inhibitor-1 from Russet Burbank potato tubers at 2.1 A resolution". Journal of Molecular Biology. 205 (1): 201–28. doi:10.1016/0022-2836(89)90376-8. PMID2494344.