Protein: FA9
Coagulation factor IX (EC 3.4.21.22) (Christmas factor) (Plasma thromboplastin component) (PTC) [Cleaved into: Coagulation factor IXa light chain; Coagulation factor IXa heavy chain]

Gene: FA9, F9
Organism: Homo sapiens
Interactions: 40
UniProt ID: P00740

Gene Ontology (top 5):
GO:0004175 - endopeptidase activity
GO:0004252 - serine-type endopeptidase activity
GO:0005509 - calcium ion binding
GO:0005576 - extracellular region
GO:0005615 - extracellular space

Download interactions: TXT   MITAB-2.5

Interaction Interactor Experiments Homologs Category Interaction
Score
Confidence

274849

LRP5
Low-density lipoprotein receptor-related protein 5

2

8

High-throughput

0.811

High

366253

PGLT1
Protein O-glucosyltransferase 1

2

3

High-throughput

0.811

High

366239

ANT3
Antithrombin-III

1

20

Small-scale

0.647

High

366244

LRP1
Prolow-density lipoprotein receptor-related protein 1

1

9

Small-scale

0.647

High

366246

EOGT
EGF domain-specific O-linked N-acetylglucosamine transferase

2

2

High-throughput

0.628

High

366252

PP4P2
Type 2 phosphatidylinositol 4,5-bisphosphate 4-phosphatase

2

4

High-throughput

0.628

High

366256

MIB2
E3 ubiquitin-protein ligase MIB2

2

1

High-throughput

0.628

High

366259

ZNG1A
Zinc-regulated GTPase metalloprotein activator 1A

2

1

High-throughput

0.628

High

366263

SETD2
Histone-lysine N-methyltransferase SETD2

2

1

High-throughput

0.628

High

366264

TOR3A
Torsin-3A

2

14

High-throughput

0.628

High

366267

BCD1
Box C/D snoRNA protein 1

2

1

High-throughput

0.628

High

366268

SENP1
Sentrin-specific protease 1

2

1

High-throughput

0.628

High

188141

HDAC3
Histone deacetylase 3

2

0

High-throughput

0.602

High

366255

FERM2
Fermitin family homolog 2

2

0

High-throughput

0.602

High

366257

LMLN
Leishmanolysin-like peptidase

2

0

High-throughput

0.602

High

325640

UBR5
E3 ubiquitin-protein ligase UBR5

2

3

High-throughput

0.574

High

366241

TYY1
Transcriptional repressor protein YY1

2

1

High-throughput

0.574

High

366242

HXD13
Homeobox protein Hox-D13

2

1

High-throughput

0.574

High

366250

DCP2
m7GpppN-mRNA hydrolase

2

1

High-throughput

0.574

High

366254

SMG8
Nonsense-mediated mRNA decay factor SMG8

2

1

High-throughput

0.574

High

366258

RBM14
RNA-binding protein 14

2

2

High-throughput

0.574

High

366266

HELLS
Lymphoid-specific helicase

2

5

High-throughput

0.574

High

366269

MCM8
DNA helicase MCM8

2

1

High-throughput

0.574

High

366270

ACOT9
Acyl-coenzyme A thioesterase 9, mitochondrial

2

5

High-throughput

0.574

High

126951

APBB1
Amyloid beta precursor protein binding family B member 1

1

2

High-throughput

0.536

High

366243

ERF
ETS domain-containing transcription factor ERF

1

3

High-throughput

0.536

High

366245

TBB3
Tubulin beta-3 chain

1

19

High-throughput

0.536

High

366247

FIGL1
Fidgetin-like protein 1

1

2

High-throughput

0.536

High

366248

TBA1A
Tubulin alpha-1A chain

1

16

High-throughput

0.536

High

361563

FA8
Coagulation factor VIII

1

16

Small-scale

0.527

High

366249

OAF
Out at first protein homolog

1

2

High-throughput

0.489

High

366240

TIMP2
Metalloproteinase inhibitor 2

1

5

High-throughput

0.479

High

70004

D11L8
Putative ATP-dependent DNA helicase DDX11-like protein 8

1

0

High-throughput

0.426

High

366251

TRM44
Probable tRNA

2

0

High-throughput

0.328

High

366260

MSTO1
Protein misato homolog 1

2

0

High-throughput

0.328

High

366261

DCC1
Sister chromatid cohesion protein DCC1

2

0

High-throughput

0.328

High

155823

DPYL4
Dihydropyrimidinase-related protein 4

1

0

High-throughput

0.279

Low

158973

ZN195
Zinc finger protein 195

1

0

High-throughput

0.279

Low

366262

K1671
Uncharacterized protein KIAA1671

1

0

High-throughput

0.279

Low

366265

ZN644
Zinc finger protein 644

1

0

High-throughput

0.279

Low


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Last updated: 11Aug2025