title: Cysteine protease inhibitor in egg of chum salmon.
abstract: Two different cysteine protease inhibitors (Forms I and II) were isolated from chum salmon egg, and their molecular weights were found to be 16,000 and 11,000, respectively. When the N-terminal amino acid sequences of Forms I and II were compared, 67% of the residues were identical but no apparent homology was found between these inhibitors and cystatins of higher vertebrates. Because the amounts of half-cystine were estimated to be 7-8 residues per molecule, they can be classified into a new group of the cystatin superfamily.
authors.affiliation: National Research Institute of Fisheries Science, Tokyo.
authors.forename: M
authors.initials: M
authors.lastname: Yamashita
authors.forename: S
authors.initials: S
authors.lastname: Konagaya
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D002850:Chromatography, Gel; D002851:Chromatography, High Pressure Liquid; D015853:Cysteine Proteinase Inhibitors / Q000737:chemistry / Q000302:isolation & purification*; D004527:Egg Proteins / Q000737:chemistry / Q000302:isolation & purification*; D004591:Electrophoresis, Polyacrylamide Gel; D006863:Hydrogen-Ion Concentration; D007536:Isomerism; D008969:Molecular Sequence Data; D008970:Molecular Weight; D012474:Salmon; D012689:Sequence Homology, Nucleic Acid
chemical_list: D015853:Cysteine Proteinase Inhibitors; D004527:Egg Proteins