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Size exclusion chromatography is an established technique for the determination of hydrodynamic volumes of proteins or protein complexes. When applied to membrane proteins, the contribution of the detergent micelle, which is required to keep the protein soluble in the aqueous phase, needs to be determined to obtain accurate measurements for the protein. In a detergent series, in which the detergents...
The subunit composition determines AMPA receptor (AMPA-R) function and trafficking. Mechanisms underlying channel assembly are thus central to the efficacy and plasticity of glutamatergic synapses. We previously showed that RNA editing at the Q/R site of the GluR2 subunit contributes to the assembly of AMPA-R heteromers by attenuating formation of GluR2 homotetramers. Here we report that this function...
To better understand the mechanism of ligand binding and ligand-induced conformational change, the crystal structure of apoenzyme catalytic (C) subunit of adenosine-3',5'-cyclic monophosphate (cAMP)-dependent protein kinase (PKA) was solved. The apoenzyme structure (Apo) provides a snapshot of the enzyme in the first step of the catalytic cycle, and in this unliganded form the PKA C subunit adopts...
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