The structure of the VemP-stalled ribosome reveals a helix-double turn-helix conformation of the nascent chain within the ribosomal tunnel, illustrating how secondary structure formation directly at the peptidyltransferase center of the ribosome can induce translational arrest.
Joshua J Filter, Byron C Williams ... Michael L Goldberg
Unfair competition, in which a phosphatase and a phosphoprotein inhibitor/substrate mutually sequester each other from competing substrates and enzymes, is a conserved mechanism for the control of PPP family phosphatases.
The Srs2 helicase functions in Synthesis-Dependent Strand Annealing to avoid crossover formation during homologous recombination by disrupting D-loops that are extended by DNA polymerase delta in an ATP-dependent and direction-specific manner.
Adam Graham Grieve, Hongmei Xu ... Matthew Freeman
The iRhom2 protein, a catalytically inactive relative of rhomboid proteases, controls inflammation and growth factor signalling by acting as an essential multifunctional regulatory subunit of the cell surface shedding protease TACE (ADAM17).
A post-lysosomal cholesterol transport inhibitor reveals how the endoplasmic reticulum membrane regulates total cellular cholesterol by constantly monitoring a critical pool of cholesterol in the plasma membrane.
Sven Kenjiro Vogel, Ferdinand Greiss ... Petra Schwille
Building on previous work (Vogel et al., 2013b), it is shown that myosin-driven actin filament rearrangements actively move, split or fuse individual lipid domains and change their overall shape.
See-Yeun Ting, Nicholas L Yan ... Elizabeth A Craig
The motor that drives preproteins into the mitochondrial matrix is coupled to the translocase by Tim44, a two-domain scaffold protein with an intrinsically disordered "dynamic arm" and a structurally stable anchoring domain.
La-related protein 1 specifically and directly binds the 5' cap and first nucleotide of mRNAs encoding ribosomal proteins and translation factors, inhibiting the assembly of translation initiation factors on these messages and therefore their translation.
