On the cover
Sarcomere structure is abnormal in mutant cells (red) that lack the Unc45b chaperone, which resides at the Z-line in normal muscle cells (red and green). When the cells are stressed, Unc45b relocates to the A-band (red bands), where it helps fold myosin.
See page 1163.
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Protein phosphatase 4 catalytic subunit regulates Cdk1 activity and microtubule organization via NDEL1 dephosphorylation