User:Manon Raiffort/Sandbox: Difference between revisions
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== Function == | == Function == | ||
Von Willebrand factor has several functions in | Von Willebrand factor has several functions in different phenomenon : | ||
* '''Primary haemostasis''' : Afer a damaged of blood vessels, platelets will adhere to subendothelium which is a thrombogenic surface thanks to vWF. The platelet plug is formed thaks to the platelets aggregation. Domain A1 of vWF links to the receptor Gp-1b-IX-V, which is found on platelet. | * '''Primary haemostasis''' : Afer a damaged of blood vessels, platelets will adhere to subendothelium which is a thrombogenic surface thanks to vWF. The platelet plug is formed thaks to the platelets aggregation. Domain A1 of vWF links to the receptor Gp-1b-IX-V, which is found on platelet. | ||
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=== A3 domain === | === A3 domain === | ||
A3 domain is a domain of 20kDa between the residues 920 to 1111 of the von willebrand factor. | A3 domain is a domain of 20kDa between the residues 920 to 1111 of the von willebrand factor. | ||
It has <scene name='75/750301/Secondary_structure/1'> a dinucleotide-binding fold </scene>. This is a structure in which a central β sheet is encompassed by <scene name='75/750301/Alpha_helix/1'>7 α-helix</scene> (named α1 to α7) connected by loops. The β sheet is composed by 6 strands (named respectively β1 to β6) and are all parallel except the β3 which is on the sheet’s edge. | It has <scene name='75/750301/Secondary_structure/1'> a dinucleotide-binding fold </scene>. This is a structure in which a central β sheet is encompassed by <scene name='75/750301/Alpha_helix/1'>7 α-helix</scene> (named α1 to α7) connected by loops. The β sheet (yellow) is composed by 6 strands (named respectively β1 to β6) and are all parallel except the β3 which is on the sheet’s edge. | ||
In this domain, two cysteine residues (923 and 1109) put the N-terminal and C-terminal region together by a disulfide bond. | In this domain, two cysteine residues (923 and 1109) put the N-terminal and C-terminal region together by a disulfide bond. | ||
The A3 domain is composed of negative charged and this allows the interaction with the collagen which has positive charged residues on it. | The A3 domain is composed of negative charged and this allows the interaction with the collagen which has positive charged residues on it. | ||
== References == | == References == |