Granuphilin c2a
WebJan 1, 2024 · The C2A domain of Slp-4 is known to drive this protein's ability to bind cellular PMs primarily via interaction with PIP 2 (12, 13).However, the protein retains an affinity for membranes containing the anionic lipids PS and/or PI, even in the absence of PIP 2 ().Here, we set out to discern the contributions of PIP 2 and background anionic lipid binding to … WebSynaptotagmin-like protein 4 (Slp-4), also known as granuphilin, is a Rab effector responsible for docking secretory vesicles to the plasma membrane before exocytosis. Slp-4 binds vesicular Rab proteins via an N-terminal …
Granuphilin c2a
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WebNov 1, 2013 · Granuphilin contains two C2 domains, C2A and C2B, that interact with the plasma membrane lipid phosphatidylinositol-(4,5)-bisphosphate [PI(4,5)P2]. The goal of this study was to determine membrane-binding mechanisms, affinities, and kinetics of both granuphilin C2 domains using fluorescence spectroscopic techniques. WebOct 12, 2006 · Like granuphilin toward insulin granules, exophilin4 promotes the targeting of glucagon granules to the plasma membrane. Although the interaction of granuphilin with syntaxin-1a is critical for the targeting activity, exophilin4 does this primarily through the affinity of its C2A domain toward the plasma membrane
WebInsights into the molecular recognition of the granuphilin C2A domain with PI(4,5)P2. 7: 24184645: 2014: The C2 domains of granuphilin are high-affinity sensors for plasma membrane lipids. 5: 27032672: 2016: Granuphilin exclusively mediates functional granule docking to the plasma membrane. 4: WebDec 12, 2013 · Proteins containing C2 domains are the sensors for Ca 2+ and PI(4,5)P 2 in a myriad of secretory pathways. Here, the use of a free-mounting system has enabled us to capture an intermediate state of Ca 2+ binding to the C2A domain of rabphilin 3A that suggests a different mechanism of ion interaction.Structural comparisons between C2A …
WebAbena Watson-Siriboe's 10 research works with 40 citations and 570 reads, including: Multivalent lipid targeting by the calcium-independent C2A domain of synaptotagmin-like protein 4/ granuphilin WebMay 31, 2024 · Synaptotagmin-like protein 4 (Slp-4), also known as granuphilin, is a Rab effector responsible for docking secretory vesicles to the plasma membrane before …
WebJan 27, 2015 · Granuphilin C2A has similar affinity for liposomes containing either 24% PS or 2% PIP2, but affinity increases ∼100-fold in the presence of both target lipids. Binding site(s) for the two lipids ...
WebFeb 15, 2006 · Synaptotagmin-like protein 4-a (Slp4-a)/granuphilin-a is specifically localized on dense-core vesicles in certain neuroendocrine cells and negatively controls dense-core vesicle exocytosis through specific interaction with Rab27A. However, the precise molecular mechanism of its inhibitory effect on exocytosis has never been … ioms definitionNMR analysis of the granuphilin-C2A domain interacting with PI(4,5)P2-nanodisc demonstrates that, besides residues within the concave groove that are responsible for PI(4,5)P2 head group binding, the strand β5 was also affected. This region may be involved in direct binding to membrane and/or undergo conformation changes upon membrane binding. ontario ca to fort irwin caontario ca to desert hot springs caWebDec 20, 2006 · Instead, the C2 domains, particularly the C2A domain, of exophilin4 showed markedly higher phospholipid-binding activities than those of granuphilin. The … ontario catholic trustees associationWebGranuphilin C2A displays a lateral diffusion constant comparable to other C2 domains. However, the diffusion of the granuphilin C2AB tandem on the same membrane appears to be slower; suggesting substantial PS contacts for the C2B domain within the C2AB tandem. This effect represents a weak ontario ca to burbank caWebGranuphilin is a membrane binding protein responsible, in part, for docking insulin secretory vesicles to the plasma membrane. Granuphilin, also known as synaptotagmin … ontario ca to city of industry caWebOct 31, 2013 · Granuphilin contains two C2 domains, C2A and C2B, that interact with the plasma membrane lipid phosphatidylinositol-(4,5)-bisphosphate [PI(4,5)P2]. The goal of … ontario ca to upland ca