Anti-Factor IX antibody produced in rabbit has been used in immunoblotting and Gla enzyme-linked immunosorbent assay (ELISA).
Four and a half LIM domains protein 1 is a protein encoded by the FHL1 gene in humans and is located on human chromosome Xq27.2. Factor IX (or Christmas factor) is one of the serine proteases of the coagulation system. It belongs to peptidase family S1 and its deficiency causes hemophilia B. The proteins belong to a novel family of LIM proteins that are expressed in human skeletal muscle. FHL1 gene is related to carcinogenesis and its inactivation is a frequent event during oral carcinogenesis. FHL1 downregulation in oral squamous cell carcinoma (OSCC) occurs through DNA methylation of the promoter region rather than histone deacetylation or mutation.
Hereditary deficiencies or dysfunctions of factor IX cause hemophilia B or "Christmas Disease"(the surname of the first family described).A disulfide bond in factor IX connects the N-terminal sequence (light chain) of factor IX to the C-terminal sequence (heavy chain).Factor IX possesses higher sensitivity, hence even tiny amounts of residual intact can be visualized by F0652.
