Download MendeleyCrystal structure of tubulin folding cofactor A from Arabidopsis thaliana and its beta-tubulin binding characterization
Lu, L., Nan, J., Mi, W., Li, L.F., Wei, C.H., Su, X.D., Li, Y.(2010) FEBS Lett 584: 3533-3539
- PubMed: 20638386
- DOI: https://doi.org/10.1016/j.febslet.2010.07.017
- Primary Citation of Related Structures:
3MXZ - PubMed Abstract:
Microtubules are composed of polymerized alpha/beta-tubulin heterodimers. Biogenesis of assembly-competent tubulin dimers is a complex multistep process that requires sequential actions of distinct molecular chaperones and cofactors. Tubulin folding cofactor A (TFCA), which captures beta-tubulin during the folding pathway, has been identified in many organisms. Here, we report the crystal structure of Arabidopsis thaliana TFC A (KIESEL, KIS), which forms a monomeric three-helix bundle. The functional binding analysis demonstrated that KIS interacts with beta-tubulin in plant. Furthermore, mutagenesis studies indicated that the alpha-helical regions of KIS participate in beta-tubulin binding. Unlike the budding yeast TFC A, the two loop regions of KIS are not required for this interaction suggesting a distinct binding mechanism of TFC A to beta-tubulin in plants.
Organizational Affiliation:
The National Laboratory of Protein Engineering and Plant Genetic Engineering, College of Life Sciences, Peking University, Beijing 100871, China.
