| 1992 |
The ZW10 protein (85 kDa) displays cell cycle-dependent localization: excluded from nuclei during interphase, migrates into the nuclear zone at prometaphase, associates with a filamentous structure (possibly kinetochore microtubules) at metaphase, and undergoes rapid redistribution to kinetochore regions at anaphase onset. Loss-of-function causes lagging chromosomes and broken centromeric connections in colchicine-treated cells. |
Immunofluorescence microscopy, mutant analysis in Drosophila larval brain neuroblasts |
The Journal of cell biology |
High |
1339459
|
| 1994 |
ZW10 protein localization at kinetochores is dependent on the rough deal and abnormal anaphase resolution gene products, indicating ZW10 functions within a multicomponent pathway. ZW10 accumulates at kinetochores in mitotically arrested cells, and its activity becomes essential at anaphase onset. |
Genetic epistasis analysis, immunofluorescence in Drosophila mutant backgrounds |
Journal of cell science |
High |
7914521
|
| 1996 |
ZW10 redistribution from kinetochores to kinetochore microtubules at metaphase requires bipolar spindle attachment. The presence or absence of ZW10 at a kinetochore predicts whether that chromosome moves to the pole, placing ZW10 downstream of or within a tension-sensing mechanism regulating chromosome separation at anaphase onset. |
Immunofluorescence in Drosophila meiotic cells; analysis of chromosome behavior in multiple mutant backgrounds |
The Journal of cell biology |
High |
8794856
|
| 1997 |
ZW10 protein is conserved from Drosophila to humans, mice, C. elegans, and plants. Human ZW10 displays the same cell cycle-dependent kinetochore localization as Drosophila ZW10 in HeLa cells. C. elegans ZW10 antisense RNA phenocopies Drosophila zw10 mutations, demonstrating functional conservation of the chromosome segregation role. |
Cross-species sequence analysis, anti-human ZW10 immunofluorescence in HeLa cells, C. elegans antisense RNA injection |
The Journal of cell biology |
High |
9298984
|
| 1998 |
ZW10 is required for dynein and dynactin localization to kinetochores in Drosophila. Dynamitin (p50 subunit of dynactin) interacts with ZW10 in a yeast two-hybrid screen. ZW10 and dynein show parallel behavior: both leave kinetochores at metaphase, both bind functional neocentromeres, and both require Rough Deal for kinetochore localization. In zw10 mutants, dynein fails to localize to kinetochores but chromosome congression proceeds normally, suggesting kinetochore dynein is dispensable for microtubule capture but essential for chromosome motion at anaphase. |
Yeast two-hybrid (ZW10-dynamitin interaction), immunofluorescence in zw10 mutants, analysis of dynein/ZW10 co-behavior |
The Journal of cell biology |
High |
9700164
|
| 1998 |
Kinetochore localization of Bub3 (spindle assembly checkpoint protein) does not require ZW10 or Rod, demonstrating that kinetochore assembly proceeds through at least two relatively independent pathways. |
Immunofluorescence in Drosophila zw10 and rod mutant neuroblasts |
Chromosoma |
Medium |
9914369
|
| 2000 |
ZW10 and Rod together are required for normal poleward chromosome motion rate; zw10-null mutants show greatly attenuated poleward chromosome movement throughout division and highly asynchronous chromosome disjunction at anaphase. |
Live imaging of chromosome movement in zw10-null Drosophila cells |
Nature cell biology |
High |
11146661
|
| 2001 |
ROD and ZW10 form a large (~700–900 kDa) evolutionarily conserved macromolecular complex in both Drosophila and human cells. They colocalize throughout mitosis, require each other for recruitment to the mitotic apparatus, and show no additive phenotypic effects in double null mutants, indicating they function in the same pathway. |
Co-immunoprecipitation from Drosophila and HeLa extracts, size-exclusion chromatography, immunofluorescence, zw10; rod double null mutant analysis |
Journal of cell science |
High |
11590237
|
| 2003 |
ZW10 and ROD form a trimeric complex with a third subunit, Zwilch. Zwilch localizes to kinetochores identically to ZW10 and ROD. Human Zwilch co-immunoprecipitates with hZW10 and hROD from HeLa extracts. Immunoaffinity chromatography data suggests a weak interaction between the ZW10/ROD/Zwilch (RZZ) complex and the kinesin CENP-meta. |
Immunoaffinity chromatography, mass spectrometry, co-immunoprecipitation from HeLa extracts, immunofluorescence, Drosophila mutant analysis |
Molecular biology of the cell |
High |
12686595
|
| 2004 |
During interphase, ZW10 localizes to the endoplasmic reticulum and cytosol, and forms a subcomplex with RINT-1 and p31 within a larger complex containing syntaxin 18 (an ER-localized t-SNARE). ZW10/RINT-1/p31 dissociate from syntaxin 18 upon Mg2+-ATP treatment with NSF and alpha-SNAP (but the subcomplex itself is maintained). ZW10 overexpression, microinjection of antibodies, and ZW10 knockdown each disrupt membrane trafficking between the ER and Golgi. |
Co-immunoprecipitation, cell fractionation, overexpression, antibody microinjection, siRNA knockdown, Golgi morphology assays |
The EMBO journal |
High |
15029241
|
| 2005 |
In mitotic human cells, ZW10 resides in a complex with ROD and Zwilch (RZZ complex), while its other partner Zwint-1 is part of a separate structural kinetochore complex with Mis12 and Ndc80/Hec1. Zwint-1 is critical for recruiting ZW10 to unattached kinetochores. Depletion of ZW10 from human cells or Xenopus egg extracts abolishes stable Mad1-Mad2 binding to unattached kinetochores, demonstrating that the RZZ complex bridges structural kinetochore components to the mitotic checkpoint machinery. |
Co-immunoprecipitation from HeLa mitotic extracts, siRNA depletion in human cells, immunodepletion from Xenopus egg extracts, immunofluorescence |
The Journal of cell biology |
High |
15824131
|
| 2006 |
Hec1 directly interacts with Zwint-1 in human cells; Hec1 recruits Zwint-1 to kinetochores first (from prophase), after which Zwint-1 recruits ZW10 (from prometaphase). Depletion of Zwint-1 abolishes ZW10 kinetochore localization without affecting Hec1. This establishes a Hec1→Zwint-1→ZW10 sequential recruitment hierarchy at human kinetochores required for spindle checkpoint control. |
Co-immunoprecipitation (M-phase specific), siRNA depletion of Hec1 and Zwint-1, immunofluorescence |
Oncogene |
High |
16732327
|
| 2006 |
ZW10 localizes to pericentriolar membranous structures and cosediments with Golgi membranes during interphase. Dominant-negative ZW10, anti-ZW10 antibody injection, and ZW10 RNAi each cause Golgi dispersal, endosome and lysosome dispersal, and a specific decrease in minus-end-directed movements as shown by live imaging. Golgi membrane-associated dynein is markedly decreased after ZW10 RNAi, indicating ZW10 mediates dynein cargo binding to membranes during interphase. |
Subcellular fractionation (cosedimentation), dominant-negative overexpression, antibody injection, RNAi, live imaging of organelle markers, dynein pulldown from membrane fractions |
The Journal of cell biology |
High |
16505164
|
| 2006 |
RINT-1 regulates ZW10 localization and its entry into the syntaxin 18 SNARE complex. Overexpression of the N-terminal RINT-1 domain (which binds ZW10) causes ZW10 redistribution, ER-to-Golgi transport block, and Golgi dispersal. RINT-1 knockdown reduces ZW10 association with syntaxin 18. In contrast, ZW10 knockdown does not cause RINT-1 redistribution, establishing RINT-1 as upstream of ZW10 in the ER-Golgi trafficking pathway. |
Overexpression, siRNA knockdown, co-immunoprecipitation, Golgi morphology assays |
Molecular biology of the cell |
High |
16571679
|
| 2008 |
In C. elegans, the RZZ complex and the coiled-coil adaptor SPDL-1 both recruit dynein/dynactin to kinetochores and are required for Mad2 targeting and spindle checkpoint activation. RZZ inhibition slows but does not prevent load-bearing kinetochore-microtubule attachments; SPDL-1 inhibition alone (which abolishes dynein targeting without perturbing RZZ localization) prevents load-bearing attachments. Co-inhibition of SPDL-1 and RZZ reduces severity to RZZ-alone levels, indicating RZZ can inhibit load-bearing attachment formation and that dynein (via SPDL-1) normally counteracts this RZZ activity. |
RNAi epistasis in C. elegans embryos, kinetochore tension assays, immunofluorescence, co-immunoprecipitation |
Genes & development |
High |
18765790
|
| 2008 |
The N-terminal region of ZW10 (not C-terminal as previously reported) is the major binding site for dynamitin. This N-terminal region can move along microtubules to the centrosomal area in a dynein-dynactin-dependent manner. Competitive binding experiments show dynamitin and RINT-1 bind the same N-terminal region of ZW10 in a mutually exclusive fashion; RINT-1 overexpression interferes with dynein-dynactin-mediated ZW10 movement. The N-terminal region also interacts with Zwint-1, suggesting partner-switching at this domain controls ZW10 localization and dynein-linking function. |
Yeast two-hybrid, co-immunoprecipitation with truncation mutants, competitive binding assays, live imaging of ZW10 movement |
Genes to cells |
Medium |
18782227
|
| 2010 |
The Rod/Zw10 complex interacts with the N-terminal domain (first 47 residues) of PIASy (a SUMO E3 ligase) at centromeres. This interaction is required for centromeric localization of PIASy and for PIASy-dependent centromeric SUMOylation (SUMO2/3) during mitosis in Xenopus egg extracts. Depletion of Rod compromises centromeric localization of PIASy and SUMO2/3. |
Co-immunoprecipitation, truncation mapping, immunofluorescence in Xenopus egg extracts, immunodepletion of Rod |
The Journal of biological chemistry |
Medium |
20696768
|
| 2015 |
The human Rod-Zwilch-ZW10 (RZZ) complex was recombinantly reconstituted by co-expression in insect cells, purified to homogeneity, and shown to contain two copies of each subunit (~800 kDa predicted). Crystals were obtained in space group P3₁/P3₂, enabling structural studies. |
Recombinant co-expression in insect cells, biochemical purification, X-ray crystallography (initial crystals) |
Acta crystallographica Section F |
Medium |
25849506
|
| 2019 |
In Drosophila, CAL1 (CENP-A chaperone) interacts with Zw10 (RZZ complex component) and constitutes the anchor for RZZ complex recruitment to centromeres. This interaction connects CENP-A loading during metaphase to spindle assembly checkpoint signaling through RZZ. |
Co-immunoprecipitation, immunofluorescence, CAL1 overexpression experiments in Drosophila cultured cells |
PLoS genetics |
Medium |
31553715
|
| 2019 |
Zw10 localizes to kinetochores during mouse oocyte meiosis and is required for Mad2 recruitment to unattached kinetochores and spindle assembly checkpoint activation. Zw10 knockdown causes precocious polar body extrusion, impaired chromosome alignment, and increased aneuploidy. |
siRNA knockdown in mouse oocytes, immunofluorescence, quantification of Mad2 kinetochore signals, chromosome segregation analysis |
Histochemistry and cell biology |
Medium |
31250100
|
| 2024 |
PLK1 phosphorylates ZW10 at Ser12, and this phosphorylation is required for dynamic ZW10-Zwint1 interactions. Inhibition of ZW10 phosphorylation causes misaligned chromosomes, while persistent phospho-mimicking ZW10 causes premature anaphase with entangled sister chromatids, demonstrating that PLK1-mediated ZW10 phosphorylation fine-tunes spindle checkpoint silencing and accurate chromosome segregation. |
In vitro kinase assay (PLK1-ZW10), phospho-mutant and phospho-mimicking ZW10 expression, co-immunoprecipitation, chromosome segregation phenotype analysis |
Journal of molecular cell biology |
Medium |
38402459
|