+Search query
-Structure paper
Title | Structure of the RZZ complex and molecular basis of its interaction with Spindly. |
---|---|
Journal, issue, pages | J Cell Biol, Vol. 216, Issue 4, Page 961-981, Year 2017 |
Publish date | Apr 3, 2017 |
Authors | Shyamal Mosalaganti / Jenny Keller / Anika Altenfeld / Michael Winzker / Pascaline Rombaut / Michael Saur / Arsen Petrovic / Annemarie Wehenkel / Sabine Wohlgemuth / Franziska Müller / Stefano Maffini / Tanja Bange / Franz Herzog / Herbert Waldmann / Stefan Raunser / Andrea Musacchio / |
PubMed Abstract | Kinetochores are macromolecular assemblies that connect chromosomes to spindle microtubules (MTs) during mitosis. The metazoan-specific ≈800-kD ROD-Zwilch-ZW10 (RZZ) complex builds a fibrous corona ...Kinetochores are macromolecular assemblies that connect chromosomes to spindle microtubules (MTs) during mitosis. The metazoan-specific ≈800-kD ROD-Zwilch-ZW10 (RZZ) complex builds a fibrous corona that assembles on mitotic kinetochores before MT attachment to promote chromosome alignment and robust spindle assembly checkpoint signaling. In this study, we combine biochemical reconstitutions, single-particle electron cryomicroscopy, cross-linking mass spectrometry, and structural modeling to build a complete model of human RZZ. We find that RZZ is structurally related to self-assembling cytosolic coat scaffolds that mediate membrane cargo trafficking, including Clathrin, Sec13-Sec31, and αβ'ε-COP. We show that Spindly, a dynein adaptor, is related to BicD2 and binds RZZ directly in a farnesylation-dependent but membrane-independent manner. Through a targeted chemical biology approach, we identify ROD as the Spindly farnesyl receptor. Our results suggest that RZZ is dynein's cargo at human kinetochores. |
External links | J Cell Biol / PubMed:28320825 / PubMed Central |
Methods | EM (single particle) |
Resolution | 10.4 - 26.0 Å |
Structure data | EMDB-4103: EMDB-4104: |
Source |
|