Product Name	VWF
Chinese Name	血管假性血友病因子Recombinant rabbit monoclonal anti
Alias	Von Willebrand Factor; Coagulation factor VIII; F8VWF; Factor VIII related antigen; von Willebrand antigen 2; Von Willebrand antigen II; Von Willebrand disease; VWD; VWF_HUMAN
Research Area	Cardiovascular  Cell biology  immunology
Immunogen Species	Rabbit
Clonality	Monoclonal
Clone NO.	9C2
React Species	Mouse,  (predicted: Human, )
Applications	WB=1:1000-5000 IHC-P=1:100-500 （Paraffin sections need antigen repair） not yet tested in other applications. optimal dilutions/concentrations should be determined by the end user.
Theoretical molecular weight	309kDa
Cellular localization	Extracellular matrix Secretory protein
Form	Liquid
Concentration	1mg/ml
immunogen	Recombinant human VWF protein
Lsotype	IgG
Purification	affinity purified by Protein A
Buffer Solution	1*TBS (pH7.4), 0.05% BSA, 40% Glycerol. Preservative: 0.05% Sodium Azide.
Storage	Shipped at 4℃. Store at -20 °C for one year. Avoid repeated freeze/thaw cycles.
Attention	This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
PubMed	PubMed
Product Detail	Von Willebrand Factor (VWF) was previously known as Factor VIII related antigen. VWF is synthesized exclusively by endothelial cells and megakaryocytes, and stored in the intracellular granules or constitutively secreted into plasma. This glycoprotein functions as both an antihemophilic factor carrier and a platelet vessel wall mediator in the blood coagulation system. Important in the maintenance of homeostasis, it participates in platelet vessel wall interactions by forming a noncovalent complex with coagulation factor VIII at the site of vascular injury. The Von Willebrand factor has functional binding domains to platelet glycoprotein Ib, glycoprotein IIb/IIIa, collagen and heparin. Mutations in this gene or deficiencies in this protein result in Von Willebrand's disease. VWD is characterized by frequent bleeding (gingival, minor skin quantitative lacerations, menorrhagia, etc.). Function: Important in the maintenance of hemostasis, it promotes adhesion of platelets to the sites of vascular injury by forming a molecular bridge between sub-endothelial collagen matrix and platelet-surface receptor complex GPIb-IX-V. Also acts as a chaperone for coagulation factor VIII, delivering it to the site of injury, stabilizing its heterodimeric structure and protecting it from premature clearance from plasma. Subunit: Multimeric. Interacts with F8. Subcellular Location: Secreted. Secreted, extracellular space, extracellular matrix. Note=Localized to storage granules. Tissue Specificity: Plasma. Post-translational modifications: All cysteine residues are involved in intrachain or interchain disulfide bonds. N- and O-glycosylated. DISEASE: Defects in VWF are the cause of von Willebrand disease type 1 (VWD1) [MIM:193400]. A common hemorrhagic disorder due to defects in von Willebrand factor protein and resulting in impaired platelet aggregation. Von Willebrand disease type 1 is characterized by partial quantitative deficiency of circulating von Willebrand factor, that is otherwise structurally and functionally normal. Clinical manifestations are mucocutaneous bleeding, such as epistaxis and menorrhagia, and prolonged bleeding after surgery or trauma. Defects in VWF are the cause of von Willebrand disease type 2 (VWD2) [MIM:613554]. A hemorrhagic disorder due to defects in von Willebrand factor protein and resulting in impaired platelet aggregation. Von Willebrand disease type 2 is characterized by qualitative deficiency and functional anomalies of von Willebrand factor. It is divided in different subtypes including 2A, 2B, 2M and 2N (Normandy variant). The mutant VWF protein in types 2A, 2B and 2M are defective in their platelet-dependent function, whereas the mutant protein in type 2N is defective in its ability to bind factor VIII. Clinical manifestations are mucocutaneous bleeding, such as epistaxis and menorrhagia, and prolonged bleeding after surgery or trauma. Defects in VWF are the cause of von Willebrand disease type 3 (VWD3) [MIM:277480]. A severe hemorrhagic disorder due to a total or near total absence of von Willebrand factor in the plasma and cellular compartments, also leading to a profound deficiency of plasmatic factor VIII. Bleeding usually starts in infancy and can include epistaxis, recurrent mucocutaneous bleeding, excessive bleeding after minor trauma, and hemarthroses. Similarity: Contains 1 CTCK (C-terminal cystine knot-like) domain. Contains 4 TIL (trypsin inhibitory-like) domains. Contains 3 VWFA domains. SWISS: P04275 Gene ID: 7450 Database links: Entrez Gene: 280958 Cow Entrez Gene: 399544 Dog Entrez Gene: 7450 Human Entrez Gene: 399543 Pig Entrez Gene: 116669 Rat Omim: 613160 Human SwissProt: Q28295 Dog SwissProt: P04275 Human SwissProt: Q28833 Pig SwissProt: Q62935 Rat Unigene: 440848 Human Unigene: 35561 Rat 血管性血友病因子(vWF)是vascular endothelial cell和骨髓巨核细胞合成的一种glycoprotein，在1期和2期止血中都起着重要作用，如缺乏将导致患者出现血管性血友病(vWD)。vWF可被ADAMTS13裂解以失去活性，血小板反应蛋白/凝血酶敏感蛋白-1(Thrombospondin,TSP-1))可参与了这个调节过程。vWF水平受多种遗传和环境因素影响，其中ABO血型影响较大。vWF主要通过A1和A3区与血小板GP 1b和胶原结合，在止血和血栓形成过程中起重要作用，并与心、脑血管疾病及血管新生密切相关，因此研究vWF的生物学特性和功能具有重要的意义。
Product Picture	Western blot analysis of Von Willebrand Factor on human lung lysates with Rabbit anti-Von Willebrand Factor antibody (SLM-52775R) at 1/1000 dilution. Lysates/proteins at 20 µg/Lane. Predicted band size: 309 kDa Observed band size: 250 kDa Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (SLM-52775R) at 1/500 dilution was used in 5% NFDM/TBST at room temperature for 2 hours. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1:300,000 dilution was used for 1 hour at room temperature. Immunohistochemical analysis of paraffin-embedded human tonsil tissue with Rabbit anti-Von Willebrand Factor antibody (SLM-52775R) at 1/400 dilution. The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (SLM-52775R) at 1/400 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.

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