Publications by authors named "S Lea"

Transgender and gender expansive (TGE) people experience poorer mental health outcomes compared to their cisgender counterparts. There is limited research on understanding the experiences of TGE school-aged young people from an Australian perspective. Since each country and state has different cultures, laws, and access to gender-affirming care research considering these differences is imperative.

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Article Synopsis
  • The Notch receptor is activated by ligands from the Delta/Serrate/Lag-2 family, but the structure of its signaling complex is not fully understood.
  • This study focuses on the Notch-1 EGF 20-27 region, using advanced techniques like crystallography and NMR, revealing it has a rigid yet flexible structure influenced by calcium ions.
  • Findings indicate that variations in the Notch-1 protein affect its activation by ligands, highlighting the importance of calcium in maintaining structural integrity and the role of different interactions in Drosophila mutations.
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The uptake and elimination of beta-lactam antibiotics in the human body are facilitated by the proton-coupled peptide transporters PepT1 (SLC15A1) and PepT2 (SLC15A2). The mechanism by which SLC15 family transporters recognize and discriminate between different drug classes and dietary peptides remains unclear, hampering efforts to improve antibiotic pharmacokinetics through targeted drug design and delivery. Here, we present cryo-EM structures of the proton-coupled peptide transporter, PepT2 from Rattus norvegicus, in complex with the widely used beta-lactam antibiotics cefadroxil, amoxicillin and cloxacillin.

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The bacterial flagellum is a macromolecular protein complex that harvests energy from ion-flow across the inner membrane to power bacterial swimming in viscous fluids via rotation of the flagellar filament. Bacteria such as are capable of bi-directional flagellar rotation even though ion flow is uni-directional. How uni-directional ion-movement through the inner membrane is utilized by this macromolecular machine to drive bi-directional flagellar rotation is not understood, but a chemotactic response regulator in the cytoplasm is known to reverse the direction of rotation.

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