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Molecular Analysis in Factor XI Deficiency
1Haemostasis Research Group, MRC Clinical Sciences Centre, Royal Postgraduate Medical School, Hammersmith Hospital, London, UK.
Methods in Molecular Medicine
|February 23, 2011
Summary
Factor XI (FXI) is a protein essential for blood clotting, acting as a precursor to an enzyme involved in the coagulation cascade. It circulates in plasma, forming a complex with high molecular weight kininogen.
Area of Science:
- Biochemistry
- Hematology
- Molecular Biology
Background:
- Factor XI (FXI) is the zymogen precursor of an active serine protease.
- FXI participates in the contact phase of coagulation.
- Synthesized in the liver, FXI circulates in plasma.
Purpose of the Study:
- To describe the fundamental properties of Factor XI.
- To outline its role in the coagulation cascade.
- To provide context for further research into FXI function and regulation.
Main Methods:
- Literature review of Factor XI.
- Analysis of protein structure and function.
- Review of coagulation pathway components.
Main Results:
- Factor XI circulates in plasma as a homodimeric glycoprotein.
- Normal plasma concentration is approximately 5 microg/mL.
- It forms a noncovalent complex with high molecular weight kininogen.
Conclusions:
- Factor XI is a key component of the intrinsic pathway of coagulation.
- Understanding FXI's structure and interactions is crucial for studying hemostasis.
- Its concentration and complex formation are important physiological characteristics.
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