6l82

Crystal structure of Chaetomium GCP5 N-terminus and Mozart1

spinqualitylabelsall models 6l82, resolution 2.24Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6l82 is a 2 chain structure with sequence from Chaetomium thermophilum var. thermophilum DSM 1495. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.2410362Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function G0SGA5_CHATD Publication Abstract from PubMed How gamma-tubulin ring complex (gamma-TuRC), a master template for microtubule nucleation, is spatially and temporally regulated for the assembly of new microtubule arrays remains unclear. Here, we report that an evolutionarily conserved microprotein, Mozart1 (Mzt1), regulates subcellular targeting and microtubule formation activity of gamma-TuRC at different cell cycle stages. Crystal structures of protein complexes demonstrate that Mzt1 promiscuously interacts with the N-terminal domains of multiple gamma-tubulin complex protein subunits in gamma-TuRC via an intercalative binding mode. Genetic- and microscopy-based analyses show that promiscuous binding of Mzt1 in gamma-TuRC controls specific subcellular localization of gamma-TuRC to modulate microtubule nucleation and stabilization in fission yeast. Moreover, we find Mzt1-independent targeting of gamma-TuRC to be crucial for mitotic spindle assembly, demonstrating the cell-cycle-dependent regulation and function of gamma-TuRC. Our findings reveal a microprotein-mediated regulatory mechanism underlying microtubule cytoskeleton formation, whereby Mzt1 binding promiscuity confers localization specificity on the multi-protein complex gamma-TuRC. Promiscuous Binding of Microprotein Mozart1 to gamma-Tubulin Complex Mediates Specific Subcellular Targeting to Control Microtubule Array Formation.,Huang TL, Wang HJ, Chang YC, Wang SW, Hsia KC Cell Rep. 2020 Jun 30;31(13):107836. doi: 10.1016/j.celrep.2020.107836. PMID:32610137 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

Proteopedia Page Contributors and Editors (what is this?)

OCA