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Related Concept Videos

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...
Long-patch Base Excision Repair01:02

Long-patch Base Excision Repair

Since the discovery of the two BER pathways, there has been a debate about how a cell chooses one pathway over the other and the factors determining this selection. Numerous in vitro experiments have pointed out multiple determinants for the sub-pathway selection. These are:
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...
PI3K/mTOR/AKT Signaling Pathway01:22

PI3K/mTOR/AKT Signaling Pathway

The mammalian target of rapamycin  (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1  (mTORC1) and mTOR complex 2  (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast,  mTORC2 consists of a rapamycin-insensitive companion...
Lipids as Anchors01:32

Lipids as Anchors

In the plasma membrane, the lipids forming the bilayer can also act as an anchor to tether proteins to the membrane. The three main types of lipid anchors found in eukaryotes are – prenyl groups, fatty acyl groups, and glycosylphosphatidylinositol or GPI groups. Prenyl and fatty acyl groups act as anchors on the cytosolic surface of the membrane, whereas GPI anchors proteins on the extracellular side.
The carboxy-terminal of most of the prenylated proteins, such as Ras proteins, contains the...
GPI Anchoring of Proteins in the ER Membrane01:29

GPI Anchoring of Proteins in the ER Membrane

GPI-anchoring is a post-translational, reversible protein modification that is ubiquitous in eukaryotes. Such proteins are primarily present on the exoplasmic leaflet of the plasma membrane.
GPI-anchor structure
A sequence of 11 enzymatic reactions results in the synthesis of the complete GPI anchor consisting of a hydrophobic and a hydrophilic portion. The hydrophobic portion comprises phosphatidylinositol, while the hydrophilic part comprises polar groups like phosphoethanolamine,...

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Related Experiment Video

Updated: May 9, 2026

Detection of Signaling Effector-Complexes Downstream of BMP4 Using in situ PLA, a Proximity Ligation Assay
12:52

Detection of Signaling Effector-Complexes Downstream of BMP4 Using in situ PLA, a Proximity Ligation Assay

Published on: March 3, 2011

A P(E)RM(I)T for BMP signaling.

Xing Guo1, Xiao-Fan Wang

  • 1Department of Pharmacology, University of California, San Diego, La Jolla, CA 92093, USA. x4guo@ucsd.edu

Molecular Cell
|July 16, 2013
PubMed
Summary
This summary is machine-generated.

Researchers discovered that arginine methylation at the plasma membrane is essential for initiating Bone Morphogenetic Protein (BMP) signal transduction. This finding reveals a key regulatory step in cellular communication pathways.

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Related Experiment Videos

Last Updated: May 9, 2026

Detection of Signaling Effector-Complexes Downstream of BMP4 Using in situ PLA, a Proximity Ligation Assay
12:52

Detection of Signaling Effector-Complexes Downstream of BMP4 Using in situ PLA, a Proximity Ligation Assay

Published on: March 3, 2011

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Methionine Functionalized Biocompatible Block Copolymers for Targeted Plasmid DNA Delivery
08:09

Methionine Functionalized Biocompatible Block Copolymers for Targeted Plasmid DNA Delivery

Published on: August 6, 2019

Area of Science:

  • Biochemistry
  • Cell Biology
  • Molecular Biology

Background:

  • Bone Morphogenetic Protein (BMP) signaling is crucial for various developmental processes.
  • Understanding the initiation of BMP signal transduction is key to deciphering cellular communication.

Purpose of the Study:

  • To identify critical steps in the initiation of BMP signal transduction.
  • To investigate the role of post-translational modifications in BMP signaling.

Main Methods:

  • The study by Xu et al. (2013) focused on the plasma membrane.
  • Investigated the requirement of arginine methylation for BMP signal initiation.

Main Results:

  • A critical step for initiating BMP signal transduction was identified.
  • Arginine methylation at the plasma membrane was found to be essential for this process.

Conclusions:

  • Arginine methylation is a key regulatory mechanism at the plasma membrane for initiating BMP signal transduction.
  • This discovery provides new insights into the molecular mechanisms governing BMP signaling pathways.