title: Isolation and characterization of a gene encoding a chymotrypsin-like serine protease from Streptomyces lividans 66.
abstract: A gene encoding a Streptomyces lividans homologue of the chymotrypsin-like serine protease (SAM-P20) of Streptomyces albogriseolus was isolated using the Streptomyces griseus prtB gene as a hybridization probe. Nucleotide sequence analysis of a representative clone uncovered the possible presence of a sequence of 900 nucleotides encoding 300 amino acids, including a putative "prepro" region of 115 amino acids. Alignment of the predicted amino acid sequence of this putative gene with other members of the family of Streptomyces extracellular chymotrypsin-like proteases indicated a high degree of homology in all cases, especially with the SAM-P20 protease. This gene product has been identified as the second member of a potentially larger family of SAL (SAM-P20-like) proteases in S. lividans 66.
authors.affiliation: Cangene Corporation, Mississauga, ON, Canada.
authors.forename: C
authors.initials: C
authors.lastname: Binnie
authors.forename: L
authors.initials: L
authors.lastname: Liao
authors.forename: E
authors.initials: E
authors.lastname: Walczyk
authors.forename: L T
authors.initials: LT
authors.lastname: Malek
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D003001:Cloning, Molecular; D008969:Molecular Sequence Data; D016415:Sequence Alignment; D017421:Sequence Analysis; D012697:Serine Endopeptidases / Q000235:genetics*; D013302:Streptomyces / Q000201:enzymology / Q000235:genetics*
chemical_list: D012697:Serine Endopeptidases