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Coagulation, also known as clotting, is the process by which blood changes from a liquid to a gel, forming a blood clot. It results in hemostasis, the cessation of blood loss from a damaged vessel, followed by repair. The process of coagulation involves activation, adhesion and aggregation of platelets, as well as deposition and maturation of ...
A coiled coil is a structural motif in proteins in which 2–7 [1] alpha-helices are coiled together like the strands of a rope. (Dimers and trimers are the most common types.) They have been found in roughly 5-10% of proteins and have a variety of functions. [2] They are one of the most widespread motifs found in protein-protein interactions.
Kringle domains are believed to play a role in binding mediators (e.g., membranes, other proteins or phospholipids), and in the regulation of proteolytic activity. [ 1 ] [ 2 ] [ 3 ] Kringle domains [ 4 ] [ 5 ] [ 6 ] are characterised by a triple loop, 3-disulfide bridge structure, whose conformation is defined by a number of hydrogen bonds and ...
Factor V. Coagulation factor V (Factor V), also less commonly known as proaccelerin or labile factor, is a protein involved in coagulation, encoded, in humans, by F5 gene. [5] In contrast to most other coagulation factors, it is not enzymatically active but functions as a cofactor. [5] Factor V deficiency leads to predisposition for hemorrhage ...
Factor VII. Coagulation factor VII (EC 3.4.21.21, formerly known as proconvertin) is a protein involved in coagulation and, in humans, is encoded by gene F7. It is an enzyme of the serine protease class. Once bound to tissue factor released from damaged tissues, it is converted to factor VIIa (or blood-coagulation factor VIIa, activated blood ...
A protein is a polyamide. Secondary structure: regularly repeating local structures stabilized by hydrogen bonds. The most common examples are the α-helix, β-sheet and turns. Because secondary structures are local, many regions of different secondary structure can be present in the same protein molecule.
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Protein C, also known as autoprothrombin IIA and blood coagulation factor XIV, [5]: 6822 [6] is a zymogen, that is, an inactive enzyme. The activated form plays an important role in regulating anticoagulation , inflammation , and cell death and maintaining the permeability of blood vessel walls in humans and other animals.