| Abbreviation: | FIX |
| Aliases: | Christmas factor, PTC, HEMB |
| Gene Symbol: | F9 |
| SubUnit: |
| Type: | serine protease |
| Main Action: | Activates FX |
| Genomic Reference Sequence: | NG_007994.1 |
| Locus Reference Genomic (LRG): | LRG_556 |
| LOVD: | https://databases.lovd.nl/shared/genes/F9 |
| Locus Specific Database (LSDB): | https://f9-db.eahad.org/ |
| Amino Acid Numbering Conversion Factor (Old > New;+/-): | 46 |
Variant Details: Factor IX (1)
| Predicted Mr (da): | 51,778 |
| Predicted pl: | 5 |
| Gene Size (bp): | 32,723 |
| Transcript Size (nt): | 2,802 |
| Number of Exons: | 8 |
| Gene Location: | Xq27.1 |
| Number of Amino Acids: | 461 |
| Mature Protein: | 47-461 |
| Observer Mr of Monomer (kDa): | 56 |
| Plasma Concentration (ug/ml): | 5 |
| Plasma Molarity (nM): | 90 |
| Half-life (h): | 25 |
| cDNA Reference Sequence (NM): | NM_000133.3 |
| Protein Reference Sequence (NP): | NP_000124.1 |
| Reference cDNA Sequence +1ATG (fasta format): | https://coagbase.org/wp-content/uploads/2022/01/NM_000133.fasta |
| Reference cDNA Sequence +1ATG (GenBank format): | https://coagbase.org/wp-content/uploads/2022/01/NM_000133.gb |
| Reference cDNA Sequence +1ATG with translation and exons marked (pdf format): | https://coagbase.org/wp-content/uploads/2022/01/NM_000133_F9.pdf |