Version: 8.0.0
Date: Tue Jan 28 2025
F9
Homo sapiensHGNC:3551
SummaryOrthologyParalogyFunction - GO AnnotationsPathwaysPhenotypesDisease AssociationsAlleles and VariantsTransgenic AllelesModelsSequence Feature ViewerSequence DetailsExpressionMolecular InteractionsGenetic Interactions
Gene

F9

Species
Homo sapiens
Symbol
F9
Name
coagulation factor IX
Synonyms
  • Christmas factor
  • coagulation factor 9
Biotype
protein coding gene
Automated Description
Enables calcium ion binding activity and endopeptidase activity. Involved in blood coagulation and zymogen activation. Located in extracellular space. Implicated in X-linked thrombophilia due to factor IX defect; X-linked warfarin sensitivity; and hemophilia B. Biomarker of type 2 diabetes mellitus.
RGD 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. Alternative splicing results in multiple transcript variants encoding different isoforms that may undergo similar proteolytic processing. [provided by RefSeq, Sep 2015]
Cross References
Additional Information
Literature

Orthology

Gene tree
PANTHER:PTHR24264
Links to orthology data in JBrowse by filter level: Stringent,  Moderate,  No filter,  Best and Best Reverse

Paralogy

Function - GO Annotations

Pathways

No data available

Phenotypes

Primary Sources
None
Other Sources
Phenotype Term
Annotation details
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    Disease Associations

    Cases where the expected disease association was NOT found
    Cell color indicative of annotation volume
    No data available

    Alleles and Variants

    Allele/Variant Symbol
    Allele Synonyms
    Category
    Variant
    Variant type
    Molecular consequence
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      Transgenic Alleles

      Species
      (carrying the transgene)
      Allele symbol
      Transgenic construct
      Expressed components
      Knock-down targets
      Regulatory regions
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        Models

        Model name
        Experimental condition
        Associated Human Diseases
        Associated Phenotypes
        Modifier
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          Sequence Feature Viewer

          Genome location
          Assembly version
          GRCh38
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          Data currently unavailable; sequence viewer under construction

          Sequence Details

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          Expression

          Primary Sources
          None
          Other Sources
          Cell color indicative of annotation volume; red slash indicates species lacks structure or developmental stage.

          Molecular Interactions

          F9 molecule type
          Interactor gene
          Interactor species
          Interactor molecule type
          Detection methods
          Source
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            Genetic Interactions

            F9 role
            F9 genetic perturbation
            Interactor gene
            Interactor species
            Interactor role
            Interactor genetic perturbation
            Interaction type
            Phenotype or trait
            Source
            Reference
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