title: Interaction of the Golgi membranes isolated from rabbit liver with microtubules in vitro.
abstract: We have developed a reconstituted model system to study the interaction of the Golgi membranes isolated from rabbit liver with taxol-stabilized bovine-brain microtubules without microtubule-associated proteins (MAPs). The Golgi membranes are associated with microtubules. The sheets of vesicles and the membranous tubules are observed along microtubules by direct visualization using differential-interference-contrast, dark field, or fluorescence microscopy. The monoclonal antibody against Golgi membranes suggests that the Golgi membranes, but not the contaminating vesicles, are interacting with microtubules. The degree of association is assayed quantitatively using rhodamine-labeled microtubules after separation of the complex from unbound microtubules by centrifugation upon sucrose gradient. The association is inhibited by crude MAPs, purified MAP2, or 1.0 mM ATP. However, the association neither requires the cytosol from rat liver or bovine brain nor N-ethylmaleimide, brefeldin A, or GTP-gamma-S. The association is mediated by trypsin-sensitive peripheral protein(s) on the Golgi membranes.
authors.affiliation: Department of Biophysics, Faculty of Science, Kyoto University, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Murata
authors.forename: T J
authors.initials: TJ
authors.lastname: Itoh
authors.forename: S
authors.initials: S
authors.lastname: Kagiwada
authors.forename: R
authors.initials: R
authors.lastname: Hishida
authors.forename: H
authors.initials: H
authors.lastname: Hotani
authors.forename: S
authors.initials: S
authors.lastname: Ohnishi
mesh_terms: D000255:Adenosine Triphosphate / Q000378:metabolism; D000818:Animals; D006056:Golgi Apparatus / Q000378:metabolism*; D007425:Intracellular Membranes / Q000378:metabolism*; D008099:Liver / Q000033:anatomy & histology / Q000378:metabolism*; D008869:Microtubule-Associated Proteins / Q000378:metabolism; D008870:Microtubules / Q000378:metabolism*; D011817:Rabbits; D014357:Trypsin
chemical_list: D008869:Microtubule-Associated Proteins; D000255:Adenosine Triphosphate; D014357:Trypsin