Gene
Entrez ID Entrez Gene ID - the GENE ID in NCBI Gene database.
3426
Gene name Gene Name - the full gene name approved by the HGNC.
Complement factor I
Gene symbol Gene Symbol - the official gene symbol approved by the HGNC.
CFI
Synonyms (NCBI Gene) Gene synonyms aliases
AHUS3, ARMD13, C3BINA, C3b-INA, FI, IF, KAF
Disease Acronyms (UniProt) Disease acronyms from UniProt database
AHUS3, ARMD13
Chromosome Chromosome number
4
Chromosome location Chromosomal Location - indicates the cytogenetic location of the gene or region on the chromosome.
4q25
Summary Summary of gene provided in NCBI Entrez Gene.
This gene encodes a serine proteinase that is essential for regulating the complement cascade. The encoded preproprotein is cleaved to produce both heavy and light chains, which are linked by disulfide bonds to form a heterodimeric glycoprotein. This hete
SNPs SNP information provided by dbSNP.
SNP ID Visualize variation Clinical significance Consequence
rs112534524 C>G,T Pathogenic, likely-benign Missense variant, coding sequence variant, non coding transcript variant
rs121964912 T>A,C Pathogenic Missense variant, coding sequence variant, non coding transcript variant, intron variant
rs121964913 G>A,T Risk-factor Synonymous variant, coding sequence variant, stop gained, non coding transcript variant, intron variant
rs121964914 T>A,C Risk-factor Coding sequence variant, genic downstream transcript variant, missense variant, downstream transcript variant, non coding transcript variant, intron variant
rs121964915 C>A,T Risk-factor Coding sequence variant, genic downstream transcript variant, stop gained, missense variant, downstream transcript variant, non coding transcript variant, intron variant
miRNA miRNA information provided by mirtarbase database.
miRTarBase ID miRNA Experiments Reference
MIRT018438 hsa-miR-335-5p Microarray 18185580
MIRT025158 hsa-miR-181a-5p Microarray 17612493
MIRT029753 hsa-miR-26b-5p Microarray 19088304
Transcription factors
Transcription factor Regulation Reference
NFKB1 Activation 10630630
RELA Activation 10630630
Gene ontology (GO) Gene ontology information of associated ontologies with gene provided by GO database.
GO ID Ontology Definition Evidence Reference
GO:0004252 Function Serine-type endopeptidase activity IEA
GO:0005044 Function Scavenger receptor activity IEA
GO:0005515 Function Protein binding IPI 16237761
GO:0005576 Component Extracellular region TAS
GO:0005615 Component Extracellular space HDA 16502470
Other IDs Other ids provides unique ids of gene in databases such as OMIM, HGNC, ENSEMBLE.
MIM HGNC e!Ensembl
217030 5394 ENSG00000205403
Protein
UniProt ID P05156
Protein name Complement factor I (EC 3.4.21.45) (C3B/C4B inactivator) [Cleaved into: Complement factor I heavy chain; Complement factor I light chain]
Protein function Trypsin-like serine protease that plays an essential role in regulating the immune response by controlling all complement pathways. Inhibits these pathways by cleaving three peptide bonds in the alpha-chain of C3b and two bonds in the alpha-chai
PDB 2XRC , 5O32
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF00530 SRCR 117 215 Scavenger receptor cysteine-rich domain Domain
PF00057 Ldl_recept_a 223 256 Low-density lipoprotein receptor domain class A Repeat
PF00057 Ldl_recept_a 257 293 Low-density lipoprotein receptor domain class A Repeat
PF00089 Trypsin 340 569 Trypsin Domain
Tissue specificity TISSUE SPECIFICITY: Expressed in the liver by hepatocytes (PubMed:6327681). Also present in other cells such as monocytes, fibroblasts or keratinocytes (PubMed:17320177, PubMed:6444659). {ECO:0000269|PubMed:17320177, ECO:0000269|PubMed:6327681, ECO:000026
Sequence
Sequence length 583
Interactions View interactions
Pathways Pathway information has different metabolic/signaling pathways associated with genes.
  KEGG   Reactome
  Complement and coagulation cascades
Staphylococcus aureus infection
  Regulation of Complement cascade
Associated diseases Disease information provided by ClinVar, GenCC, and GWAS databases.
Causal
Disease term Disease name dbSNP ID References
Arthritis Arthritis rs1594890601, rs1594882933, rs184370809, rs776489319, rs1594883470
Complement component deficiency Complement deficiency disease, Complement Factor I (C3 inactivator) deficiency, Immunodeficiency with factor I anomaly rs387906509, rs1467298230, rs1022194067, rs774370086, rs121964922, rs372345940, rs121913052, rs121913053, rs460897, rs121913054, rs121913056, rs121913058, rs796052138, rs41286844, rs121909592
View all (29 more)
24142231, 12562389, 25988862, 17018561, 8613545
Doyne honeycomb retinal dystrophy DOYNE HONEYCOMB RETINAL DYSTROPHY rs121434491, rs281865373 25986072
Glomerulonephritis Glomerulonephritis rs778043831
Unknown
Disease term Disease name Evidence References Source
C3 glomerulopathy C3 glomerulopathy 27458560 ClinVar
Otitis media Recurrent otitis media ClinVar
Complement Component Deficiency complement factor I deficiency GenCC
Hemolytic Uremic Syndrome atypical hemolytic-uremic syndrome with I factor anomaly, atypical hemolytic-uremic syndrome GenCC
Associations from Text Mining
Disease Name Relationship Type References
Alternating hemiplegia of childhood Associate 25188723
Androgen Insensitivity Syndrome Associate 31671693
Anti Glomerular Basement Membrane Disease Associate 22834933
Arterial Occlusive Diseases Associate 28484274
Asthma Associate 30366082
Atrial Fibrillation Associate 32389013
Atypical Hemolytic Uremic Syndrome Associate 19459807, 20016463, 20118898, 20595690, 21103695, 22410797, 22622361, 29500241, 29888403, 30377230, 34643860, 35069568, 35619721, 36755127, 37363824
View all (2 more)
Autoimmune Diseases of the Nervous System Associate 35619721
Brain Neoplasms Associate 26849056
Breast Neoplasms Associate 25618258