| 2003 |
Translokin (CEP57) interacts specifically with the 18K form of FGF-2 (but not FGF-1), colocalizes with the microtubular network, and is required for intracellular translocation of FGF-2 to the nucleus; RNAi knockdown of Translokin reduces FGF-2 translocation without affecting FGF-1 trafficking, and this nuclear translocation is essential for FGF-2 mitogenic activity. |
Co-immunoprecipitation, RNAi knockdown, FGF-1/FGF-2 chimera mapping, nuclear localization signal rescue, cell proliferation assay |
Nature cell biology |
High |
12717444
|
| 2007 |
Xenopus Cep57 (xCep57) localizes to kinetochores and interacts with kinetochore proteins Zwint, Mis12, and CLIP-170, as well as gamma-tubulin. Immunodepletion of xCep57 from egg extracts produces weakened bipolar spindles, loss of tension between sister kinetochores, spindle microtubules sensitive to nocodazole, and defective kinetochore-microtubule binding in vitro. At centrosomes, xCep57 is required for maintaining (but not initiating) microtubule anchorage. |
Immunodepletion from Xenopus egg extracts, in vitro kinetochore-microtubule binding assay, co-immunoprecipitation, spindle assembly assay |
Cell |
High |
17803911
|
| 2008 |
Cep57 has two functional domains: an N-terminal coiled-coil domain that localizes to the centrosome (internal to gamma-tubulin) and mediates multimerization with other Cep57 molecules, and a C-terminal coiled-coil domain that directly binds microtubules, nucleates and bundles microtubules in vitro, and generates nocodazole-resistant microtubule cables in vivo when overexpressed. |
Domain truncation/overexpression, in vitro microtubule nucleation/bundling assay, nocodazole resistance assay, immunofluorescence |
The Biochemical journal |
High |
18294141
|
| 2009 |
Translokin/CEP57 interacts with sorting nexin 6, Ran-binding protein M, and kinesins KIF3A and KIF3B; through these interactions it participates in two exclusive complexes that direct bidirectional trafficking of FGF2, controlling the balance between unconventional secretion and nuclear translocation of FGF2. |
Co-immunoprecipitation, yeast two-hybrid, functional trafficking assays |
Traffic (Copenhagen, Denmark) |
Medium |
19804566
|
| 2011 |
Translokin/CEP57 interacts with cyclin D1 (binding to regions also involved in Cdk4 binding), retains a fraction of cyclin D1 in the juxtanuclear region, and prevents its nuclear accumulation in quiescent cells. Knockdown of CEP57 leads to undue nuclear cyclin D1 accumulation and increased Cdk4-dependent pRB phosphorylation; overexpression of CEP57 blocks nuclear cyclin D1 accumulation, inhibits Cdk4-dependent pRB phosphorylation, and impairs S-phase entry. |
Co-immunoprecipitation, siRNA knockdown, overexpression, immunofluorescence localization, pRB phosphorylation assay, flow cytometry |
Traffic (Copenhagen, Denmark) |
Medium |
21306487
|
| 2011 |
Biallelic loss-of-function mutations in CEP57, a centrosomal protein involved in nucleating and stabilizing microtubules, cause constitutional mosaic aneuploidies (mosaic variegated aneuploidy syndrome), establishing CEP57 function as essential for correct chromosome number maintenance during cell division. |
Exome sequencing, identification of loss-of-function variants in patients, cell biology in patient cells |
Nature genetics |
Medium |
21552266
|
| 2012 |
Cep57 is a pericentriolar material (PCM) component whose centrosomal localization depends on interaction with NEDD1. Depletion of Cep57 causes PCM fragmentation, multipolar spindles, unaligned chromosomes, decreased centrosomal microtubule assembly activity, and reduced spindle length and microtubule density; Cep57 also binds spindle microtubules and is required for proper localization of spindle pole focusing proteins. |
Co-immunoprecipitation (Cep57–NEDD1), siRNA knockdown, immunofluorescence, spindle assembly assays |
Cell research |
Medium |
22508265
|
| 2012 |
CEP57 is required for FGF-2-induced centriole overduplication and normal centriole duplication; CEP57 overexpression stimulates centriole overduplication; CEP57 functions by modulating tubulin acetylation to promote daughter centriole stability; CEP57 is an intracellular FGF-2-binding and trafficking factor that links FGF-2 signaling to centrosome duplication. |
RNAi screen, siRNA knockdown, overexpression, immunofluorescence for centriole number, tubulin acetylation assay |
Cancer research |
Medium |
23243019
|
| 2013 |
Cep57, Cep63, and Cep152 form a ring-like complex localizing around the proximal end of centrioles, as determined by selective chemical crosslinking combined with superresolution microscopy. |
Selective chemical crosslinking, superresolution STED microscopy |
Current biology : CB |
High |
23333316
|
| 2013 |
Cep57 localizes to the central spindle and midbody during cytokinesis and is required for cytokinesis. Depletion of Cep57 disrupts central spindle microtubule assembly and causes abnormal midbody localization of MKLP1, Plk1, and Aurora B, leading to cytokinesis failure and binuclear cell formation. Cep57 directly recruits Tektin 1 to the midbody matrix to regulate microtubule organization. |
siRNA knockdown, immunofluorescence, co-immunoprecipitation/pull-down for Cep57–Tektin 1 interaction, live imaging |
The Journal of biological chemistry |
Medium |
23569207
|
| 2016 |
Cep57 localizes to kinetochores in human cells and binds Mis12 (a KMN network component). Cep57 also interacts with Mad1. Depletion of Cep57 decreases kinetochore localization of Mad1-Mad2, reduces spindle assembly checkpoint (SAC) signaling, and increases chromosome segregation errors. The microtubule-binding activity of Cep57 is involved in the timely removal of Mad1 from kinetochores upon microtubule attachment. |
Co-immunoprecipitation, siRNA knockdown, immunofluorescence for kinetochore Mad1-Mad2 localization, SAC signaling assay, chromosome segregation analysis |
Nature communications |
High |
26743940
|
| 2019 |
Cep57 is required for PCM organization to regulate centriole engagement; depletion of Cep57 causes PCM disorganization and precocious centriole disengagement during mitosis, leading to ectopic MTOC activity of disengaged daughter centrioles and chromosome mis-segregation. Cep57 directly binds the PACT domain of pericentrin, providing a critical interface between the centriole core and PCM. Microcephaly osteodysplastic primordial dwarfism (MOPDII)-associated pericentrin mutations impair the Cep57–pericentrin interaction and cause PCM disorganization. |
siRNA depletion, pull-down assay (Cep57–pericentrin PACT domain), patient-derived cells (MVA and MOPDII), immunofluorescence, live imaging |
Nature communications |
High |
30804344
|
| 2018 |
Cep57 mutant (truncating frameshift) mouse embryonic fibroblasts and patient-derived fibroblasts fail to undergo centrosome maturation in G2 phase, causing premature centriole disjunction, centrosome amplification, aberrant spindle formation, and high chromosome missegregation rates. In vivo, Cep57 is required for Fgf2-mediated bone formation, and Cep57 haploinsufficiency predisposes to cancer (tumor suppressor role). |
Mouse knockout/knock-in model, patient-derived fibroblasts, immunofluorescence for centrosome maturation, chromosome analysis, tumor incidence measurement |
The Journal of clinical investigation |
High |
30035751
|
| 2021 |
Cep57 and its paralog Cep57L1 cooperatively maintain centriole engagement during interphase. Co-depletion induces precocious centriole disengagement in interphase; the disengaged daughter centrioles convert into centrosomes in a Plk1-dependent manner, leading to centriole reduplication, increased centriole number, and chromosome segregation errors. |
siRNA co-depletion, immunofluorescence, live imaging, Plk1 inhibitor rescue experiment |
The Journal of cell biology |
High |
33492359
|
| 2024 |
Cep57 undergoes liquid-liquid phase separation (LLPS) driven by three critical domains (NTD, CTD, and polybasic LMN motif). In vitro Cep57 condensates catalyze microtubule nucleation via LMN motif-mediated tubulin concentration. In cells, the LMN motif is required for centrosomal microtubule aster formation. Cep63 restricts Cep57 assembly, expansion, and microtubule polymerization activity. Overexpression of competitive multivalent-interaction constructs (including an MVA mutation) leads to excessive centrosome duplication. Self-assembly mutants of Cep57 fail to rescue centriole disengagement and PCM disorganization in Cep57-depleted cells. |
In vitro LLPS assay, in vitro microtubule nucleation assay, domain mutagenesis, overexpression, rescue experiments in Cep57-depleted cells, SAXS (small-angle X-ray scattering) |
Proceedings of the National Academy of Sciences of the United States of America |
High |
38857398
|
| 2024 |
Crystal structure of the human Cep57 C-terminal microtubule-binding domain reveals a leucine zipper with an adjacent possible microtubule-binding region, forming a stabilizing scaffold proposed to accommodate microtubule nucleation and tension. Conserved structural features are maintained across evolution. |
X-ray crystallography |
Proteins |
Medium |
38699879
|
| 2026 |
NuSAP localizes to centrioles, and its depletion disrupts centriole tubulin architecture and premature centriole disengagement, as well as disrupting the spatial organization of the CEP57-CEP63-CEP152 torus assembly. CEP57 is identified as a direct interactor of NuSAP by TurboID-based proteomics and biochemical assays. NuSAP is essential for the initial recruitment of the CEP57-CEP63-CEP152 complex to the proximal end of procentrioles, placing NuSAP upstream of CEP57 in torus complex assembly. |
TurboID-based proximity proteomics, co-immunoprecipitation/biochemical assays, super-resolution microscopy, siRNA depletion |
Advanced science (Weinheim, Baden-Wurttemberg, Germany) |
Medium |
41616107
|
| 2025 |
In early zebrafish embryos, Cep57 localizes to both the nucleus and centrosomes. Cep57 interacts with Rad21 (cohesin), and its loss causes Rad21 depletion, supernumerary nuclei, and PCM disorganization. Cep57 also interacts with Geminin and induces Rb1-dependent G1 arrest; loss of Cep57 leads to G1/S cell cycle defects, genome instability, and increased apoptosis. Quantitative proteomics in Cep57-deficient embryos reveals induction of DNA damage response and checkpoint pathways. |
Zebrafish morpholino/loss-of-function, co-immunoprecipitation (Cep57–Rad21, Cep57–Geminin), immunofluorescence localization, quantitative proteomics, cell cycle analysis |
bioRxivpreprint |
Low |
bio_10.1101_2025.04.10.648303
|