ArticleMolecular and cellular biochemistry1996
Tubulin domains for the interaction of microtubule associated protein DMAP-85 from Drosophila melanogaster.
Article in Molecular and cellular biochemistry, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 6 citations in OpenAlex.
- Roles of beta-tubulin residues Ala428 and Thr429 in microtubule formation in vivo.The Journal of biological chemistry · 2009Article
- The EF-hand Ca2+-binding protein p22 plays a role in microtubule and endoplasmic reticulum organization and dynamics with distinct Ca2+-binding requirements.Molecular biology of the cell · 2004Article
- The EF-hand Ca(2+)-binding protein p22 associates with microtubules in an N-myristoylation-dependent manner.Molecular biology of the cell · 1999Article
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3 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
The interaction of microtubule associated proteins (MAPs) with the microtubule system has been characterized in depth in neuronal cells from various mammalian species. These proteins interact with well-defined domains within the acidic tubulin carboxyl-terminal regulatory region. However, there is little information on the mechanisms of MAPs-tubulin interactions in nonmammalian systems. Recently, a novel tau-like protein designated as DMAP-85 has been identified in Drosophila melanogaster, and the regulation of its interactions with cytoskeletal elements was analyzed throughout different developmental stages of this organism. In this report, the topographic domains involved in the binding of DMAP-85 with tubulin heterodimer were investigated. Affinity chromatography of DMAP-85 in matrixes of taxol-stabilized microtubules showed the reversible interaction of DMAP-85 with domains on the microtubular surface. Co-sedimentation studies using the subtilisin-treated tubulin (S-tubulin) indicated the lack of association of DMAP-85 to this tubulin moiety. Moreover, studies on affinity chromatography of the purified 4 kDa C-terminal tubulin peptide bound to an affinity column, confirmed that DMAP-85 interacts directly with this regulatory domain on tubulin subunits. Further studies on sequential affinity chromatography using a calmodulin affinity column followed by the microtubule column confirmed the similarities in the interaction behaviour of DMAP-85 with that of tau. DMAP-85 associated to both calmodulin and the microtubular polymer. These studies support the idea that the carboxyl-terminal region on tubulin constitutes a common binding domain for most microtubule-interacting proteins.
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