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RESEARCH HIGHLIGHT

FIRST PERSON

CELL SCIENTISTS TO WATCH

OPINION

Summary: The role of centrosomal γ-tubulin ring complex (γTuRC) is generally believed to be the nucleation of cytoplasmic microtubules. However, it also functions in centriole biogenesis, centriole structural integrity and ciliogenesis.

REVIEW

Summary: Research in recent years has afforded important insight into how microtubules are made in the cell and provides a basis for an exciting era in the cytoskeleton field.

SHORT REPORTS

Summary: APC/CFZR-1-dependent regulation influences centrosomal ZYG-1 in C. elegans, which is critical for centrosome number homeostasis.

Summary: cAMP is essential for almost every stage in Dictyostelium development, but, surprisingly, it is dispensable for allorecognition and tissue formation.

RESEARCH ARTICLES

Summary: Identification of the main sources of divergence among published estimates of the ratio of t-tubular to surface membrane Na+-Ca2+ exchange current densities in adult rat cardiomyocytes.

Summary:In situ-tagged PCNT condenses into dynamic granules, and its coiled-coil-rich regions phase separate into centrosome-like condensates in human cells, shedding new light on centrosome assembly.

Summary: DNA binding disrupts the interaction between the N and C termini of full-length androgen receptor and its splice variant.

Summary: Skeletal muscle cells are multinucleated fibers that express some of the biggest mammalian proteins. We report that mRNA length contributes to mRNA distribution and that microtubules are involved in mRNA spreading.

Summary: Oocyte chromosomes direct meiotic spindle assembly. PP2A is important for this process, regulating microtubule stability, sister chromatid cohesion, microtubule attachments and metaphase I arrest.

Summary: The impact of a ciliopathy gene mutation depends on cell type, and can be compensated for by expression of other genes that function in the same cilia membrane protein delivery pathway.

Summary: There is a multi-faceted response of lymph node fibroblasts to dendritic cells in an adaptive immune reaction, which requires the coordinated activity of partner proteins podoplanin, CD44 and CD9.

Summary: Using a targeted Ca2+ reporter, signaling from dyadic InsP3Rs to colocated RyR channels is shown to augment sarcoplasmic Ca2+ release during excitation–contraction coupling in cardiomyocytes.

Summary: Atomic force microscopy imaging reveals that the ectodomain of an ancestral-type classical cadherin has a flexibly bendable strand-like portion responsible for homophilic adhesion.

Summary:me31B is identified as a negative regulator of dedifferentiation from spermatogonia to germline stem cells in the Drosophila testis via its ability to downregulate nos expression.

Summary: The C-terminus of Ana1 helps recruit Polo kinase to centrioles. This is key for efficient PCM assembly and centriole elongation, and independent from other roles of Ana1 in centriole maturation.

Summary: PCNT-depleted oocytes lack Aurora A at spindle pole aMTOCs and fail to assemble the liquid-like spindle domain, a critical reservoir of microtubule regulatory factors, leading to meiotic spindle instability.

Summary: The motor adaptor JIP4 is recruited to macropinosomes by the PtdIns3P-binding protein Phafin2 to promote recycling to the plasma membrane via tubular extensions of macropinosomes.

Summary:In vivo studies of Twinfilin1 provide new links between the core machinery of actin regulation and specialized cell behaviors of embryonic morphogenesis.

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