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Related Concept Videos

Conservation of Protein Domains Over Different Proteins02:26

Conservation of Protein Domains Over Different Proteins

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Protein domains are small structurally independent units that are part of a single amino acid chain.  Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to...
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Assembly of Signaling Complexes01:30

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Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
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Directing Proteins to the Rough Endoplasmic Reticulum01:34

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The organelle-specific signaling sequences direct proteins synthesized in the cytosol to their final destination like ER, mitochondria, peroxisomes, etc. Some of the proteins directed to ER are then trafficked via vesicles to other organelles within the cell or the extracellular environment through the Golgi complex. For example, the rough ER synthesizes soluble proteins for transportation to the lysosomes or secretion out of the cell. It can also synthesize transmembrane proteins that can...
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Transducer Mechanism: Enzyme-Linked Receptors01:27

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Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
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G Protein-coupled Receptors01:15

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G Protein-Coupled Receptors or GPCRs are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to sensory stimuli such as light, odors, hormones, cytokines, or neurotransmitters.
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Intracellular Hormone Receptors01:08

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Lipid-soluble hormones diffuse across the plasma and nuclear membrane of target cells to bind to their specific intracellular receptors. These receptors act as transcription factors that regulate gene expression and protein synthesis in the target cell
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Updated: Feb 28, 2026

Identification of Functional Protein Regions Through Chimeric Protein Construction
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Erythropoietin Receptor Structural Domains.

Qingxin Li1, CongBao Kang2

  • 1Institute of Chemical & Engineering Sciences, Agency for Science, Technology and Research (A*STAR), Jurong Island, Singapore, Singapore.

Vitamins and Hormones
|June 21, 2017
PubMed
Summary

Erythropoietin receptor (EpoR) structure is key to red blood cell production. Understanding its domains, including the extracellular, transmembrane, and C-terminal regions, aids in comprehending EPO signal transduction.

Keywords:
Conformational changeCytokine receptorErythropoietinErythropoietin receptorMembrane proteinSrc homology 2 domainTranscription factor

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Background:

  • Erythropoietin (EPO) regulates red blood cell production via its receptor, EpoR.
  • EpoR is a single-span membrane protein with distinct functional domains.

Purpose of the Study:

  • To provide a structural description of the Erythropoietin receptor (EpoR) domains.
  • To summarize recent advances in the structural determination of EpoR domains.

Main Methods:

  • Structural analysis of EpoR domains.
  • Review of recent structural determination progress.

Main Results:

  • Detailed description of the extracellular, transmembrane, and C-terminal domains of EpoR.
  • Summary of recent structural data for EpoR domains.

Conclusions:

  • The structural understanding of EpoR domains is crucial for elucidating EPO signal transduction pathways.
  • Recent structural progress facilitates a deeper comprehension of EpoR function in cellular signaling.