Identification of hydrophobic fragments of alpha 1-antitrypsin and C1 protease inhibitor in human bile, plasma and spleen. 1992

J Johansson, and S Gröndal, and J Sjövall, and H Jörnvall, and T Curstedt
Department of Chemistry I, Karolinska Institutet, Stockholm, Sweden.

Hydrophobic peptides were isolated from the phospholipid fraction of human bile, plasma and spleen by exclusion chromatography in organic solvents. From plasma, the activation peptide of C1 protease inhibitor was recovered, from spleen the activation peptide of alpha 1-antitrypsin, and from bile, both these peptides, as well as a fragment generated by proteolytic cleavage of alpha 1-antitrypsin six residues N-terminal of the P1-P1' peptide bond. Cleavages in this region inactivate antiproteases but have previously not been reported to occur in vivo. These peptides in human bile may reflect physiological actions in regulation of antiproteolytic activity or bile secretion processes, and/or be of importance for the physicochemical state of cholesterol, phospholipids and bile acids in bile.

UI MeSH Term Description Entries
D010446 Peptide Fragments Partial proteins formed by partial hydrolysis of complete proteins or generated through PROTEIN ENGINEERING techniques. Peptide Fragment,Fragment, Peptide,Fragments, Peptide
D002850 Chromatography, Gel Chromatography on non-ionic gels without regard to the mechanism of solute discrimination. Chromatography, Exclusion,Chromatography, Gel Permeation,Chromatography, Molecular Sieve,Gel Filtration,Gel Filtration Chromatography,Chromatography, Size Exclusion,Exclusion Chromatography,Gel Chromatography,Gel Permeation Chromatography,Molecular Sieve Chromatography,Chromatography, Gel Filtration,Exclusion Chromatography, Size,Filtration Chromatography, Gel,Filtration, Gel,Sieve Chromatography, Molecular,Size Exclusion Chromatography
D003174 Complement C1 Inactivator Proteins Serum proteins that inhibit, antagonize, or inactivate COMPLEMENT C1 or its subunits. Complement 1 Esterase Inhibitors,Complement C1 Inactivating Proteins,Complement C1 Inhibiting Proteins,Complement C1 Inhibitor Proteins,Complement C1r Protease Inhibitor Proteins,Complement C1s Esterase Inhibitor Proteins,Complement Component 1 Inactivator Proteins
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D006868 Hydrolysis The process of cleaving a chemical compound by the addition of a molecule of water.
D000515 alpha 1-Antitrypsin Plasma glycoprotein member of the serpin superfamily which inhibits TRYPSIN; NEUTROPHIL ELASTASE; and other PROTEOLYTIC ENZYMES. Trypsin Inhibitor, alpha 1-Antitrypsin,alpha 1-Protease Inhibitor,alpha 1-Proteinase Inhibitor,A1PI,Prolastin,Serpin A1,Zemaira,alpha 1 Antiprotease,alpha 1-Antiproteinase,1-Antiproteinase, alpha,Antiprotease, alpha 1,Inhibitor, alpha 1-Protease,Inhibitor, alpha 1-Proteinase,Trypsin Inhibitor, alpha 1 Antitrypsin,alpha 1 Antiproteinase,alpha 1 Antitrypsin,alpha 1 Protease Inhibitor,alpha 1 Proteinase Inhibitor
D001646 Bile An emulsifying agent produced in the LIVER and secreted into the DUODENUM. Its composition includes BILE ACIDS AND SALTS; CHOLESTEROL; and ELECTROLYTES. It aids DIGESTION of fats in the duodenum. Biliary Sludge,Sludge, Biliary
D013154 Spleen An encapsulated lymphatic organ through which venous blood filters.

Related Publications

J Johansson, and S Gröndal, and J Sjövall, and H Jörnvall, and T Curstedt
January 1985, Journal of medicine,
J Johansson, and S Gröndal, and J Sjövall, and H Jörnvall, and T Curstedt
February 1981, Biochemical and biophysical research communications,
J Johansson, and S Gröndal, and J Sjövall, and H Jörnvall, and T Curstedt
January 1985, Journal of medicine,
J Johansson, and S Gröndal, and J Sjövall, and H Jörnvall, and T Curstedt
January 1990, Human heredity,
J Johansson, and S Gröndal, and J Sjövall, and H Jörnvall, and T Curstedt
September 2004, Virus research,
J Johansson, and S Gröndal, and J Sjövall, and H Jörnvall, and T Curstedt
November 1991, Schweizerische Rundschau fur Medizin Praxis = Revue suisse de medecine Praxis,
J Johansson, and S Gröndal, and J Sjövall, and H Jörnvall, and T Curstedt
March 1985, Life sciences,
J Johansson, and S Gröndal, and J Sjövall, and H Jörnvall, and T Curstedt
January 1989, Annales de biologie clinique,
J Johansson, and S Gröndal, and J Sjövall, and H Jörnvall, and T Curstedt
June 1977, Canadian journal of biochemistry,
J Johansson, and S Gröndal, and J Sjövall, and H Jörnvall, and T Curstedt
August 1985, Pediatric research,
Copied contents to your clipboard!