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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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Mechanisms of Membrane Domain Formation00:59

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Different physical properties of lipids and proteins allow them to localize and form distinct islands or domains in the membrane. Some membrane domains are formed due to protein-protein interactions, whereas others are formed due to the presence of specific lipids such as sphingolipids and sterols—for example, large proteins, such as bacteriorhodopsin, aggregate and create distinct domains.
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Membrane Domains01:18

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The membrane domains concentrate specific lipids and proteins at one place within the membrane, which helps in cell signaling, adhesion, and other critical cellular processes. These domains can differ in size, composition, function, and lifespan.
Protein Domains
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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
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
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Evolution of Microbial Genome01:08

Evolution of Microbial Genome

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Microbial genome evolution is a highly dynamic process shaped by continual gene gain and loss across species and strains. This genomic flexibility allows microorganisms to adapt rapidly to environmental pressures and interactions with other organisms. Central to understanding this diversity is the distinction between the core and pan genomes.The core genome comprises the genes shared by all sampled strains of a species, representing essential functions needed for fundamental cellular processes.
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Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles
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Minidomains from evolution for scaffold engineering.

Hiron Saraj Devnath1, Jing Xie1, David J Craik1

  • 1Institute for Molecular Bioscience, Australian Research Council Centre and Excellence for Innovations in Peptide and Protein Science, The University of Queensland, Brisbane, QLD 4072, Australia.

Biotechnology Advances
|April 22, 2026
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Protein engineering is advancing with miniproteins, small, functional protein units. Minidomains, a type of miniprotein, offer unique scaffolds for developing novel drugs and biotechnologies.

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Area of Science:

  • Biochemistry
  • Structural Biology
  • Protein Engineering

Background:

  • Protein engineering leverages novel drugs and biotechnologies.
  • Advances in genome annotation and computational prediction highlight miniproteins (under 100 amino acids) as promising scaffolds.
  • Miniproteins offer structural complexity for drug discovery but pose engineering challenges.

Purpose of the Study:

  • To review minidomains as naturally adapted scaffolds for bioengineering.
  • To provide a data-driven perspective on identifying and engineering minidomains.
  • To highlight Ig-like C1 domains as a prevalent human minidomain example.

Main Methods:

  • Surveying proteomes using a data-driven approach to identify minidomains.
  • Analyzing sequence and structure information to guide engineering efforts.
  • Reviewing established and emerging strategies for minidomain scaffold engineering.

Main Results:

  • Minidomains are well-defined structural units functioning independently within larger proteins.
  • Ig-like C1 domains are identified as the most prevalent minidomain in humans.
  • A framework for identifying and engineering minidomains is presented.

Conclusions:

  • Minidomains represent a valuable class of scaffolds for bioengineering and drug discovery.
  • Advances in technology and design enable promising future applications of minidomain-based engineering.
  • The study provides a foundation for utilizing minidomains in biotechnology.