Biochemical and immunochemical similarity between erythrocyte membrane aspartic proteinase and cathepsin E. 1987

K Yamamoto, and E Ueno, and H Uemura, and Y Kato
Department of Pharmacology, Nagasaki University School of Dentistry, Japan.

An aspartic proteinase previously thought to be unique to erythrocyte membranes, termed "EMAP", has been shown to be closely related to cathepsin E. Enzymic comparison revealed that these two enzymes resembled each other in molecular weight, susceptibility to pepstatin and chromatographic behaviors on DEAE-Sephacel and Mono P chromatofocusing columns. They were immunoprecipitated by antiserum against human EMAP in a similar way. Immunochemical similarity between the two enzymes was also substantiated by immunoblot analysis.

UI MeSH Term Description Entries
D007118 Immunoassay A technique using antibodies for identifying or quantifying a substance. Usually the substance being studied serves as antigen both in antibody production and in measurement of antibody by the test substance. Immunochromatographic Assay,Assay, Immunochromatographic,Assays, Immunochromatographic,Immunoassays,Immunochromatographic Assays
D008970 Molecular Weight The sum of the weight of all the atoms in a molecule. Molecular Weights,Weight, Molecular,Weights, Molecular
D010450 Endopeptidases A subclass of PEPTIDE HYDROLASES that catalyze the internal cleavage of PEPTIDES or PROTEINS. Endopeptidase,Peptide Peptidohydrolases
D002403 Cathepsins A group of lysosomal proteinases or endopeptidases found in aqueous extracts of a variety of animal tissues. They function optimally within an acidic pH range. The cathepsins occur as a variety of enzyme subtypes including SERINE PROTEASES; ASPARTIC PROTEINASES; and CYSTEINE PROTEASES. Cathepsin
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
D004910 Erythrocyte Membrane The semi-permeable outer structure of a red blood cell. It is known as a red cell 'ghost' after HEMOLYSIS. Erythrocyte Ghost,Red Cell Cytoskeleton,Red Cell Ghost,Erythrocyte Cytoskeleton,Cytoskeleton, Erythrocyte,Cytoskeleton, Red Cell,Erythrocyte Cytoskeletons,Erythrocyte Ghosts,Erythrocyte Membranes,Ghost, Erythrocyte,Ghost, Red Cell,Membrane, Erythrocyte,Red Cell Cytoskeletons,Red Cell Ghosts
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000936 Antigen-Antibody Complex The complex formed by the binding of antigen and antibody molecules. The deposition of large antigen-antibody complexes leading to tissue damage causes IMMUNE COMPLEX DISEASES. Immune Complex,Antigen-Antibody Complexes,Immune Complexes,Antigen Antibody Complex,Antigen Antibody Complexes,Complex, Antigen-Antibody,Complex, Immune,Complexes, Antigen-Antibody,Complexes, Immune
D016282 Aspartic Acid Endopeptidases A sub-subclass of endopeptidases that depend on an ASPARTIC ACID residue for their activity. Aspartic Endopeptidases,Aspartyl Endopeptidases,Acid Endopeptidases, Aspartic,Endopeptidases, Aspartic Acid,Endopeptidases, Aspartyl
D020059 Cathepsin E An aspartic endopeptidase that is similar in structure to CATHEPSIN D. It is found primarily in the cells of the immune system where it may play a role in processing of CELL SURFACE ANTIGENS. Erythrocyte Membrane Aspartic Proteinase,Slow Moving Proteinase,Moving Proteinase, Slow,Proteinase, Slow Moving

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