Amino acid sequence of thermostable direct hemolysin produced by Vibrio parahaemolyticus. 1987

S Tsunasawa, and A Sugihara, and T Masaki, and F Sakiyama, and Y Takeda, and T Miwatani, and K Narita

The complete amino acid sequence of the subunit of thermostable direct hemolysin, a dimeric protein composed of identical subunits isolated from Vibrio parahaemolyticus, was determined by sequencing BrCN-peptides, their tryptic peptides, and overlaps obtained by Achromobacter protease I digestion. The subunit consists of 165 amino acid residues with the sole disulfide bond between Cys 151 and Cys 161. It is deduced that the biologically active hemolysin is formed by noncovalent association of subunits which are not linked together by disulfide bonds. The primary structure of hemolysin elucidated in the present study is essentially the same as that deduced from the nucleotide sequence of a gene encoding the protein but differs in 9 amino acid residues, suggesting the possibility of the presence of multiple genes for the thermostable direct hemolysin in Vibrio parahaemolyticus.

UI MeSH Term Description Entries
D010455 Peptides Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are considered to be larger versions of peptides that can form into complex structures such as ENZYMES and RECEPTORS. Peptide,Polypeptide,Polypeptides
D004591 Electrophoresis, Polyacrylamide Gel Electrophoresis in which a polyacrylamide gel is used as the diffusion medium. Polyacrylamide Gel Electrophoresis,SDS-PAGE,Sodium Dodecyl Sulfate-PAGE,Gel Electrophoresis, Polyacrylamide,SDS PAGE,Sodium Dodecyl Sulfate PAGE,Sodium Dodecyl Sulfate-PAGEs
D006460 Hemolysin Proteins Proteins from BACTERIA and FUNGI that are soluble enough to be secreted to target ERYTHROCYTES and insert into the membrane to form beta-barrel pores. Biosynthesis may be regulated by HEMOLYSIN FACTORS. Hemolysin,Hemolysins,Hemalysins,Proteins, Hemolysin
D000421 Alcaligenes A genus of gram-negative, aerobic, motile bacteria that occur in water and soil. Some are common inhabitants of the intestinal tract of vertebrates. These bacteria occasionally cause opportunistic infections in humans.
D000595 Amino Acid Sequence The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION. Protein Structure, Primary,Amino Acid Sequences,Sequence, Amino Acid,Sequences, Amino Acid,Primary Protein Structure,Primary Protein Structures,Protein Structures, Primary,Structure, Primary Protein,Structures, Primary Protein
D014736 Vibrio parahaemolyticus A species of bacteria found in the marine environment, sea foods, and the feces of patients with acute enteritis. Beneckea parahaemolytica,Oceanomonas parahaemolytica,Pasteurella parahaemolytica

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