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Related Concept Videos

Cell Diversity01:13

Cell Diversity

The concept of a cell started with microscopic observations of dead cork tissue by Robert Hooke in 1665. Hooke coined the term "cell" based on the resemblance of the small subdivisions in the cork to the rooms that monks inhabited, called cells. About ten years later, Antonie van Leeuwenhoek became the first person to observe the living and moving cells under a microscope. In the century that followed, the theory that cells represented the basic unit of life developed.
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Diversity of Protists II01:27

Diversity of Protists II

Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
Diversity of Protists III01:27

Diversity of Protists III

Rhizaria are a diverse group of unicellular protists characterized by their threadlike cytoplasmic extensions known as pseudopodia. These structures aid in both locomotion and feeding, giving Rhizaria an amoeboid appearance. Their amoeboid morphology once led to taxonomic confusion, but molecular phylogenetics has clarified their evolutionary placement and emphasized their shared use of pseudopodia despite divergent lineages.This clade comprises diverse lineages such as Chlorarachniophyta,...
Diversity of Protists IV01:27

Diversity of Protists IV

Amoebozoa represent a diverse group of terrestrial and aquatic protists that utilize lobe-shaped pseudopodia for locomotion and feeding. This characteristic differentiates them from the Rhizaria, which possess threadlike pseudopodia. The primary classifications within Amoebozoa include gymnamoebas, entamoebas, and the plasmodial and cellular slime molds. Phylogenetic evidence indicates that Amoebozoa diverged from a lineage that ultimately gave rise to fungi and animals.Gymnamoebas and...
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Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
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The physiological function of a cell and cellular communication are outcomes of a range of extrinsic signals, intracellular signaling pathways, and cellular responses. No two cell types express the same repertoire of signaling components. Receptors are highly selective for their cognate ligands, but once activated, they can alter multiple cellular processes such as DNA transcription, protein synthesis, and metabolic activity. 
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Gemmacin B: bringing diversity back into focus.

Anna Robinson1, Gemma L Thomas, Richard J Spandl

  • 1Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, UKCB2 1EW.

Organic & Biomolecular Chemistry
|August 9, 2008
PubMed
Summary
This summary is machine-generated.

Researchers synthesized a focused library to discover gemmacin B, a more potent analog of gemmacin identified through diversity-oriented synthesis (DOS). This work advances the development of novel therapeutic agents.

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Area of Science:

  • Medicinal Chemistry
  • Drug Discovery
  • Organic Synthesis

Background:

  • Gemmacin, a compound identified via diversity-oriented synthesis (DOS), serves as a lead for further drug development.
  • Optimization of lead compounds is crucial for enhancing therapeutic efficacy and reducing side effects.

Purpose of the Study:

  • To synthesize and characterize novel gemmacin analogs.
  • To identify a more potent analog of gemmacin through structure-activity relationship (SAR) studies.

Main Methods:

  • Focused library synthesis.
  • Structure-activity relationship (SAR) investigations.
  • Characterization of synthesized compounds.

Main Results:

  • A focused library of gemmacin analogs was successfully synthesized.
  • Gemmacin B was identified as a significantly more potent analog compared to the original gemmacin.
  • SAR data provided insights into the structural requirements for enhanced potency.

Conclusions:

  • Gemmacin B represents a promising next-generation compound with improved potency.
  • The synthetic strategy and SAR findings pave the way for further optimization of gemmacin-based therapeutics.