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Oriented fibrin gels formed by polymerization in strong magnetic fields
Nature
|January 1, 1981
Summary
Highly oriented fibrin gels form when polymerization occurs slowly in a strong magnetic field. This reveals that fibrin protofibrils pack into a three-dimensional crystalline lattice structure.
Area of Science:
- Biochemistry
- Biophysics
- Materials Science
Background:
- Fibrinogen, a soluble plasma protein, polymerizes into a fibrin network during blood clotting.
- The fibrinogen molecule (MW 340,000) consists of two identical halves, each with A alpha, B beta, and gamma peptide chains.
- Thrombin cleaves fibrinogen into fibrin monomers, releasing fibrinopeptides A and B.
Purpose of the Study:
- To investigate the structure of fibrin protofibrils and their packing arrangement.
- To explore the use of strong magnetic fields in controlling fibrin polymerization.
- To introduce magnetically induced birefringence as a tool for studying polymerization.
Main Methods:
- Slow fibrin polymerization in a strong magnetic field.
- Observation of highly oriented fibrin gels.
- Utilizing magnetically induced birefringence.
Main Results:
- Highly oriented fibrin gels were successfully formed.
- Fibrin protofibrils were shown to pack into a three-dimensional crystalline lattice.
- Magnetically induced birefringence was demonstrated as a viable study tool.
Conclusions:
- Strong magnetic fields can induce the formation of highly ordered fibrin structures.
- Fibrin protofibrils self-assemble into crystalline lattices.
- Magnetic fields offer potential applications in controlling protein polymerization and material formation.