関連する実験動画

Updated: Jul 30, 2026

Direct Imaging of ER Calcium with Targeted-Esterase Induced Dye Loading (TED)
09:32

Direct Imaging of ER Calcium with Targeted-Esterase Induced Dye Loading (TED)

Published on: May 7, 2013

Purkinje細胞のデンドライトにおけるイノシトール-1,4,5-トリスホスファートによる局所カルシウムシグナル伝達

E A Finch1, G J Augustine

  • 1Department of Neurobiology, Duke University Medical Center, Durham, North Carolina 27710, USA.

Nature
|January 5, 1999
PubMed
まとめ

イノシトール-1,4,5-トリスホスファート (InsP3) 信号伝達は,小脳プルキンジェニューロンにおいて空間的に制限され,局所シナプス機能を調節する. この局所的なカルシウム放出は,並列繊維シナプスの特定のグループに影響を与えます.

さらに関連する動画

Imaging Local Ca2+ Signals in Cultured Mammalian Cells09:30

Imaging Local Ca2+ Signals in Cultured Mammalian Cells

Published on: March 3, 2015

Single-Cell Calcium Imaging for Studying the Activation of Calcium Ion Channels07:17

Single-Cell Calcium Imaging for Studying the Activation of Calcium Ion Channels

Published on: December 13, 2024

関連する概念動画

What are Second Messengers?01:12

What are Second Messengers?

Because many receptor binding ligands are hydrophilic, they do not cross the cell membrane and thus their message must be relayed to a second messenger on the inside. There are several second messenger pathways, each with their own way of relaying information. G-protein coupled receptors can activate both phosphoinositol and cyclic AMP (cAMP) second messenger pathways. The phosphoinositol path is active when the receptor induces phospholipase C to hydrolyze the phospholipid,...
Phosphoinositides and PIPs01:42

Phosphoinositides and PIPs

Phosphoinositides are a group of phospholipids containing a glycerol backbone with two fatty acid chains and a phosphate attached to a myoinositol sugar ring. The inositol head group extends into the cytoplasm, where it is modified by adding phosphate groups to form phosphatidylinositol phosphates or PIPs.
Different phosphoinositides are synthesized and recruited on the cytosolic face of the plasma membrane. The localization of specific phosphoinositides concentrated in separate membrane...
IP3/DAG Signaling Pathway01:11

IP3/DAG Signaling Pathway

Membrane lipids such as phosphatidylinositol (PI) are precursors for several membrane-bound and soluble second messengers. Specific kinases phosphorylate PI and produce phosphorylated inositol phospholipids. One such inositol phospholipids are the  phosphatidylinositol-4,5 bisphosphate [PI(4,5)P2], present in the inner half of the lipid bilayer. Upon ligand binding, GPCR stimulates Gq proteins to turn on phospholipase Cꞵ. Activated phospholipase Cꞵ cleaves PI(4,5)P2 and produces two-second...
Feedback Regulation of Calcium Concentration01:27

Feedback Regulation of Calcium Concentration

Calcium is an essential signaling molecule required for various cellular functions. Calcium pumps and ion channels on cell and organellar membranes, such as those on the endoplasmic reticulum (ER), regulate calcium concentrations inside the cell. They remain closed, keeping the cytosolic calcium levels low at a resting state.
Various transmembrane receptors, such as G protein-coupled receptors (GPCRs), elicit a response to extracellular signals by increasing cytosolic calcium. Activated GPCRs...
Calmodulin-dependent Signaling01:16

Calmodulin-dependent Signaling

Calmodulin (CaM) is a calcium-binding protein in eukaryotes that controls various calcium-regulated cellular processes. It has four calcium-binding sites that bind calcium to form the calcium-calmodulin ( Ca2+-CaM) complex. GPCR stimulation increases the calcium levels in the cells that bind to CaM and induces a conformational change.
The Ca2+-CaM complex does not have enzymatic activity by itself. Instead, the complex binds downstream target proteins, including membrane proteins or enzymes,...