Factor IX Antibody Pair | F9 antibody pair
Factor IX, canine
NCBI and Uniprot Product Information
NCBI Description
This gene encodes vitamin K-dependent coagulation factor IX that circulates in the blood as an inactive zymogen. This factor is converted to an active form by factor XIa, which excises the activation peptide and thus generates a heavy chain and a light chain held together by one or more disulfide bonds. The role of this activated factor IX in the blood coagulation cascade is to activate factor X to its active form through interactions with Ca+2 ions, membrane phospholipids, and factor VIII. Alterations of this gene, including point mutations, insertions and deletions, cause factor IX deficiency, which is a recessive X-linked disorder, also called hemophilia B or Christmas disease. [provided by RefSeq, Jul 2008]
Uniprot Description
Function: Factor IX is a vitamin K-dependent plasma protein that participates in the intrinsic pathway of blood coagulation by converting factor X to its active form in the presence of Ca2+ ions, phospholipids, and factor VIIIa.
Catalytic activity: Selective cleavage of Arg-|-Ile bond in factor X to form factor Xa.
Subunit structure: Heterodimer of a light chain and a heavy chain; disulfide-linked.
Subcellular location: Secreted.
Tissue specificity: Synthesized primarily in the liver and secreted in plasma.
Domain: Calcium binds to the gamma-carboxyglutamic acid (Gla) residues and, with stronger affinity, to another site, beyond the Gla domain.
Post-translational modification: Activated by factor XIa, which excises the activation peptide.The iron and 2-oxoglutarate dependent 3-hydroxylation of aspartate and asparagine is (R) stereospecific within EGF domains.
Involvement in disease: Hemophilia B (HEMB) [MIM:306900]: An X-linked blood coagulation disorder characterized by a permanent tendency to hemorrhage, due to factor IX deficiency. It is phenotypically similar to hemophilia A, but patients present with fewer symptoms. Many patients are asymptomatic until the hemostatic system is stressed by surgery or trauma.Note: The disease is caused by mutations affecting the gene represented in this entry. Ref.13 Ref.15 Ref.36 Ref.39 Ref.40 Ref.41 Ref.42 Ref.43 Ref.44 Ref.45 Ref.46 Ref.47 Ref.48 Ref.49 Ref.50 Ref.51 Ref.52 Ref.53 Ref.54 Ref.55 Ref.56 Ref.57 Ref.58 Ref.59 Ref.60 Ref.61 Ref.62 Ref.64 Ref.65 Ref.66 Ref.67 Ref.68 Ref.69 Ref.72 Ref.73 Ref.74Mutations in position 43 (Oxford-3, San Dimas) and 46 (Cambridge) prevents cleavage of the propeptide, mutation in position 93 (Alabama) probably fails to bind to cell membranes, mutation in position 191 (Chapel-Hill) or in position 226 (Nagoya OR Hilo) prevent cleavage of the activation peptide.Thrombophilia, X-linked, due to factor IX defect (THPH8) [MIM:300807]: A hemostatic disorder characterized by a tendency to thrombosis.Note: The disease is caused by mutations affecting the gene represented in this entry. Ref.75
Pharmaceutical use: Available under the name BeneFix (Baxter and American Home Products). Used to treat hemophilia B.
Miscellaneous: In 1952, one of the earliest researchers of the disease, Dr. R.G. Macfarlane used the patient's surname, Christmas, to refer to the disease and also to refer to the clotting factor which he called the 'Christmas Factor' At the time Stephen Christmas was a 5-year-old boy. He died in 1993 at the age of 46 from acquired immunodeficiency syndrome contracted through treatment with blood products.
Sequence similarities: Belongs to the peptidase S1 family.Contains 2 EGF-like domains.Contains 1 Gla (gamma-carboxy-glutamate) domain.Contains 1 peptidase S1 domain.
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Product Notes
The F9 f9 (Catalog #AAA512186) is an Antibody Pair and is intended for research purposes only. The product is available for immediate purchase. It is sometimes possible for the material contained within the vial of "Factor IX, Antibody Pair" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
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