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Inhibition of kinesin-driven microtubule motility by monoclonal antibodies to kinesin heavy chains. 1988

A L Ingold, and S A Cohn, and J M Scholey
Department of Molecular and Cellular Biology, National Jewish Center for Immunology and Respiratory Medicine, Denver, Colorado 80302.

We have prepared and characterized seven mouse monoclonal antibodies (SUK 1-7) to the 130-kD heavy chain of sea urchin egg kinesin. On immunoblots, SUK 3 and SUK 4 cross-reacted with Drosophila embryo 116-kD heavy chains, and SUK 4, SUK 5, SUK 6, and SUK 7 bound to the 120-kD heavy chains of bovine brain kinesin. Three out of seven monoclonal antikinesins (SUK 4, SUK 6, and SUK 7) caused a dose-dependent inhibition of sea urchin egg kinesin-induced microtubule translocation, whereas the other four monoclonal antibodies had no detectable effect on this motility. The inhibitory monoclonal antibodies (SUK 4, SUK 6, and SUK 7) appear to bind to spatially related sites on an ATP-sensitive microtubule binding 45-kD chymotryptic fragment of the 130-kD heavy chain, whereas SUK 2 binds to a spatially distinct site. None of the monoclonal antikinesins inhibited the microtubule activated MgATPase activity of kinesin, suggesting that SUK 4, SUK 6, and SUK 7 uncouple this MgATPase activity from motility.

UI MeSH Term Description Entries
D008868 Microtubule Proteins Proteins found in the microtubules. Proteins, Microtubule
D008870 Microtubules Slender, cylindrical filaments found in the cytoskeleton of plant and animal cells. They are composed of the protein TUBULIN and are influenced by TUBULIN MODULATORS. Microtubule
D009419 Nerve Tissue Proteins Proteins, Nerve Tissue,Tissue Proteins, Nerve
D011863 Radioimmunoassay Classic quantitative assay for detection of antigen-antibody reactions using a radioactively labeled substance (radioligand) either directly or indirectly to measure the binding of the unlabeled substance to a specific antibody or other receptor system. Non-immunogenic substances (e.g., haptens) can be measured if coupled to larger carrier proteins (e.g., bovine gamma-globulin or human serum albumin) capable of inducing antibody formation. Radioimmunoassays
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
D003429 Cross Reactions Serological reactions in which an antiserum against one antigen reacts with a non-identical but closely related antigen. Cross Reaction,Reaction, Cross,Reactions, Cross
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
D006825 Hybridomas Cells artificially created by fusion of activated lymphocytes with neoplastic cells. The resulting hybrid cells are cloned and produce pure MONOCLONAL ANTIBODIES or T-cell products, identical to those produced by the immunologically competent parent cell. Hybridoma
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000911 Antibodies, Monoclonal Antibodies produced by a single clone of cells. Monoclonal Antibodies,Monoclonal Antibody,Antibody, Monoclonal

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