Journal of Biological Chemistry RSS feed -- recent Molecular Biophysics articles
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Conserved biophysical features of the CaV2 presynaptic Ca2+ channel homologue from the early-diverging animal Trichoplax adhaerens [Membrane Biology]

The dominant role of CaV2 voltage-gated calcium channels for driving neurotransmitter release is broadly conserved. Given the overlapping functional properties of CaV2 and CaV1 channels, and less so CaV3 channels, it is unclear why there have not been major shifts toward dependence on other CaV channels for synaptic transmission. Here, we provide a...

Fri Dec 25, 2020 13:46
Molecular architecture and domain arrangement of the placental malaria protein VAR2CSA suggests a model for carbohydrate binding [Glycobiology and Extracellular Matrices]

VAR2CSA is the placental-malaria–specific member of the antigenically variant Plasmodium falciparum erythrocyte membrane protein 1 (PfEMP1) family. It is expressed on the surface of Plasmodium falciparum-infected host red blood cells and binds to specific chondroitin-4-sulfate chains of the placental proteoglycan receptor. The functional ∼310 kDa ectodomain...

Fri Dec 25, 2020 13:46
Seeded fibrils of the germline variant of human {lambda}-III immunoglobulin light chain FOR005 have a similar core as patient fibrils with reduced stability [Molecular Biophysics]

Systemic antibody light chains (AL) amyloidosis is characterized by deposition of amyloid fibrils derived from a particular antibody light chain. Cardiac involvement is a major risk factor for mortality. Using MAS solid-state NMR, we studied the fibril structure of a recombinant light chain fragment corresponding to the fibril protein from patient FOR005,...

Fri Dec 25, 2020 13:46
Humanin selectively prevents the activation of pro-apoptotic protein BID by sequestering it into fibers [Protein Structure and Folding]

Members of the B-cell lymphoma (BCL-2) protein family regulate mitochondrial outer membrane permeabilization (MOMP), a phenomenon in which mitochondria become porous and release death-propagating complexes during the early stages of apoptosis. Pro-apoptotic BCL-2 proteins oligomerize at the mitochondrial outer membrane during MOMP, inducing pore formation....

Fri Dec 25, 2020 13:46
Determinants of replication protein A subunit interactions revealed using a phosphomimetic peptide [Molecular Biophysics]

Replication protein A (RPA) is a eukaryotic ssDNA-binding protein and contains three subunits: RPA70, RPA32, and RPA14. Phosphorylation of the N-terminal region of the RPA32 subunit plays an essential role in DNA metabolism in processes such as replication and damage response. Phosphorylated RPA32 (pRPA32) binds to RPA70 and possibly regulates the transient...

Fri Dec 25, 2020 13:46
Identification of compounds that bind the centriolar protein SAS-6 and inhibit its oligomerization [Computational Biology]

Centrioles are key eukaryotic organelles that are responsible for the formation of cilia and flagella, and for organizing the microtubule network and the mitotic spindle in animals. Centriole assembly requires oligomerization of the essential protein spindle assembly abnormal 6 (SAS-6), which forms a structural scaffold templating the organization of...

Fri Dec 25, 2020 13:46

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