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The range of footfall patterns seen in walking amphibians, reptiles and mammals, including hippopotamus, horse and (inverted) sloth, are consistent with simple principles of mechanical work minimization.

The placement of single methyl groups at certain positions in the sequence of small model transmembrane proteins consisting solely of leucines and isoleucines can modulate highly specific, productive interactions with the transmembrane domain of the erythropoietin receptor.

Size threshold and suprastructure formation are key parameters that control the infective potential of amyloid fibrils as prion particles.

Isothermal titration calorimetry experiments clarify apparently discrepant results described previously and show that N-terminal sequences of complexin bind to SNARE complexes containing C-terminally truncated synaptobrevin when they include the syntaxin-1 juxtamembrane region.

Respiratory activity and inner membrane organisation of mitochondria from Drosophila melanogaster break down during ageing, but mouse heart mitochondria appear to be protected against age-related damage.

Channel characteristics of the presequence translocation pore have a direct impact on protein import into the mitochondrial matrix.

Small probes show that most AMPA receptors are constrained near or in the synapses.

An atomic model of the 3744-residue Tra1 protein reveals multiple transcription activator binding sites, its integration within the SAGA chromatin coactivator complex, and a striking similarity to DNA-repair factor DNA-PKcs.

A flip of the dimer asymmetry following the first ATP hydrolysis provides a mechanistic model for client remodeling by the mitochondrial Hsp90, TRAP1.

The SHIP2 inositol phosphatase is an important upstream regulator of the Akt signaling pathway, which requires a catalytic core formed by the phosphatase domain tightly packed to a C2 domain for its function.