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Related Concept Videos

Fibrous Proteins00:55

Fibrous Proteins

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Fibrous proteins are either long and narrow proteins or assemble to form long and thin structures. They contain repetitive units and usually consist of either alpha helices or beta sheets and, in rare cases, a mix of both. The amino acids in the primary structure often consist of repeating amino acid sequences. The role of fibrous proteins is primarily structural. Many are located in the extracellular matrix and are present in connective tissues to impart strength and joint mobility. They are...
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Elastin is Responsible for Tissue Elasticity01:12

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Elastic fiber contains the protein elastin along with lesser amounts of other proteins and glycoproteins. The main property of elastin is that it will return to its original shape after being stretched or compressed. Elastic fibers are prominent in elastic tissues found in skin and the elastic ligaments of the vertebral column.
Ligaments and tendons are made of dense regular connective tissue, but in ligaments not all fibers are parallel. Dense regular elastic tissue contains elastin fibers and...
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Protein and Protein Structure02:15

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Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
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Many proteins can be classified into two distinct subtypes - globular or fibrous. These two types differ in their shapes and solubilities.
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The Extracellular Matrix

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In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
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Related Experiment Video

Updated: Dec 14, 2025

Synthetic Spider Silk Production on a Laboratory Scale
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Synthetic Spider Silk Production on a Laboratory Scale

Published on: July 18, 2012

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Spider silk as archetypal protein elastomer.

Fritz Vollrath1, David Porter1

  • 1Department of Zoology, University of Oxford, South Parks Road, Oxford, OX1 3PS, United Kingdom. fritz.vollrath@zoology.oxford.ac.uk.

Soft Matter
|July 19, 2020
PubMed
Summary

Spider silk

Area of Science:

  • Biomaterials Science
  • Protein Engineering
  • Materials Science

Background:

  • Spider silk's unique mechanical properties are crucial for understanding biomaterials.
  • Water and hydrogen bonds significantly influence silk's material characteristics.
  • Biological materials typically function in a hydrated, elastomeric state.

Purpose of the Study:

  • To analyze the physical properties of spider silks.
  • To introduce a model for studying energy absorption in stretching silk.
  • To investigate the role of water and hydrogen bonds in silk's mechanical properties.

Main Methods:

  • Overview of spider silk physical properties.
  • Development of a model to simulate energy absorption during stretching.

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Last Updated: Dec 14, 2025

Synthetic Spider Silk Production on a Laboratory Scale
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  • Analysis of inter- and intramolecular hydrogen bonds and water's influence.

    • Main Results:

    • Silk's transformation from hydrated feedstock to dehydrated fiber allows detailed analysis.
    • The study provides insights into energy absorption mechanisms in spider silk.
    • Water plays a critical role in modifying silk's material properties.

    Conclusions:

    • Spider silk properties can be analyzed in detail post-dehydration.
    • Silk serves as a model for understanding a range of elastomeric proteins.
    • This research deepens the understanding of mechanical properties in biomaterials like bone, keratins, elastin, and collagen.