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    Pigino et al. use cryoelectron tomography to obtain the three-dimensional structure of radial spokes (red), regulatory complexes that project from the outer microtubule doublets (grey) of cilia and flagella. Also shown in this reconstruction of a Chlamydomonas flagellum are the outer and inner dynein arms (light and dark blue), the dynein light and intermediate chains (yellow), and the dynein regulatory complex (green). Image courtesy of Pigino et al.
    See page 673.

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ISSN 0021-9525
EISSN 1540-8140
In this Issue

In This Issue

In Focus

Two studies reassess the number of proteins at yeast kinetochores and centromeres.

People & Ideas

Montell studies Drosophila oogenesis, focusing primarily on the collective migration of border cells.

Review

Report

The Rap1–Rgl–Ral signaling network modulates asymmetric Drosophila neuroblast division in cooperation with other intrinsic polarity cues.

Current models of centromere/kinetochore architecture are not sufficient to explain the number of molecules of histone H3 variant CENP-A observed in quantitative microscopy.

Quantitative measurement of the number of Cse4, CBF3, and Ndc80 proteins at kinetochores reveals a 2.5–3-fold increased copy number relative to prior estimates.

Phosphorylation of the kinetochore component Nsk1 by Cdk1 antagonizes its localization to and function at the kinetochore and spindle during early mitosis.

Regulated RhoA localization at the cleavage site is mediated by the Sticky/Citron kinase and ensures RhoA’s proper activation and appropriate contractile ring dynamics during cytokinesis.

Article

Before ER tubule fusion, the atlastin GTPase undergoes a “prefusion” to “postfusion” conformational change that is mediated by an intramolecular salt bridge.

The budding yeast heat shock protein Hsp42 coaggregates with misfolded proteins and may link those aggregates to further sorting factors.

The yeast class V myosin Myo4p moves processively in vivo in a cargo-dependent manner following formation of a double-headed complex with the adapter protein She3p and the mRNA-binding protein She2p.

The Tim50 subunit of the mitochondrial TIM23 complex contains a presequence-binding domain that is essential for viability and precursor transport across the inner membrane.

Much like mammalian cells, yeast contain a Rho-dependent pathway for endocytosis in addition to canonical clathrin-dependent endocytosis.

Cryo-EM tomography of wild-type and mutant cilia and flagella from Tetrahymena and Chlamydomonas reveals new information on the substructure of radial spokes.

The von Hippel–Lindau tumor suppressor and the hypoxia-inducible factor-αs are essential for the transition from embryonic hyaloidal vascular system to adult retinal vasculature in the mouse eye.

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