Gene Gene information from NCBI Gene database.
Entrez ID 629
Gene name Complement factor B
Gene symbol CFB
Synonyms (NCBI Gene)
AHUS4ARMD14BFBFDCFABCFBDFBFBI12GBGH2-BfPBF2
Chromosome 6
Chromosome location 6p21.33
Summary This gene encodes complement factor B, a component of the alternative pathway of complement activation. Factor B circulates in the blood as a single chain polypeptide. Upon activation of the alternative pathway, it is cleaved by complement factor D yieldi
SNPs SNP information provided by dbSNP.
6
SNP ID Visualize variation Clinical significance Consequence
rs4151667 T>A Benign, benign-likely-benign, likely-benign, pathogenic Coding sequence variant, missense variant
rs117905900 C>G,T Likely-benign, risk-factor Missense variant, coding sequence variant, synonymous variant
rs121909748 A>G Risk-factor Missense variant, coding sequence variant
rs200837114 G>A Pathogenic Coding sequence variant, missense variant
rs398123065 C>A,T Pathogenic Missense variant, coding sequence variant, stop gained
miRNA miRNA information provided by mirtarbase database.
4
miRTarBase ID miRNA Experiments Reference
MIRT018836 hsa-miR-335-5p Microarray 18185580
MIRT027802 hsa-miR-98-5p Microarray 19088304
MIRT887347 hsa-miR-4760-3p CLIP-seq
MIRT887348 hsa-miR-662 CLIP-seq
Transcription factors Transcription factors information provided by TRRUST V2 database.
2
Transcription factor Regulation Reference
CREB5 Activation 21132541
STAT3 Activation 22169226
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
31
GO ID Ontology Definition Evidence Reference
GO:0001848 Function Complement binding TAS 11367526
GO:0001905 Process Activation of membrane attack complex IDA 30643019
GO:0002329 Process Pre-B cell differentiation IDA 3486249
GO:0002376 Process Immune system process IEA
GO:0004252 Function Serine-type endopeptidase activity IDA 624565, 3638964, 6554279, 6919543, 9748277, 30643019
Other IDs Other IDs provides unique identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
138470 1037 ENSG00000243649
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
P00751
Protein name Complement factor B (EC 3.4.21.47) (C3/C5 convertase) (Glycine-rich beta glycoprotein) (GBG) (PBF2) (Properdin factor B) [Cleaved into: Complement factor B Ba (Ba); Complement factor B Bb (Bb)]
Protein function Precursor of the catalytic component of the C3 and C5 convertase complexes of the alternative pathway of the complement system, a cascade of proteins that leads to phagocytosis and breakdown of pathogens and signaling that strengthens the adapti
PDB 1DLE , 1Q0P , 1RRK , 1RS0 , 1RTK , 2OK5 , 2WIN , 2XWB , 2XWJ , 3HRZ , 3HS0 , 6QSW , 6QSX , 6RAV , 6RUR , 6RUV , 6T8U , 6T8V , 6T8W , 7JTN , 7JTQ , 7NOZ , 8ENU , 8EOK , 8UIN
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF00084 Sushi 40 88 Sushi repeat (SCR repeat) Domain
PF00084 Sushi 103 158 Sushi repeat (SCR repeat) Domain
PF00084 Sushi 165 218 Sushi repeat (SCR repeat) Domain
PF00092 VWA 270 467 von Willebrand factor type A domain Domain
PF00089 Trypsin 481 752 Trypsin Domain
Sequence
Sequence length 764
Interactions View interactions
Pathways Pathway information has different metabolic/signaling pathways associated with genes.
  KEGG  Reactome
  Complement and coagulation cascades
Staphylococcus aureus infection
Coronavirus disease - COVID-19
  Alternative complement activation
Activation of C3 and C5
Regulation of Complement cascade
Associated diseases Disease associations from ClinVar categorized as Causal (Pathogenic/Likely Pathogenic) or Unknown.
186
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession
Atypical hemolytic-uremic syndrome Likely pathogenic; Pathogenic rs2482685692, rs117905900, rs121909748 RCV005864670
RCV005864442
RCV005864443
Atypical hemolytic-uremic syndrome with B factor anomaly Likely pathogenic; Pathogenic rs117905900, rs121909748 RCV000017459
RCV000017460
CFB-related disorder Likely pathogenic; Pathogenic rs2482685692 RCV003335941
Complement factor b deficiency Likely pathogenic rs2482687881 RCV003991153
Unknown Diseases with uncertain, conflicting, or no pathogenic evidence in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession
Age related macular degeneration 14 Conflicting classifications of pathogenicity; Benign; Likely benign; Uncertain significance rs148298609, rs116928087, rs755016493, rs200837114, rs541260302 RCV002498280
RCV002502377
RCV002487565
RCV002481842
RCV001281059
Complement component 2 deficiency Benign; Likely benign rs45484591 RCV000987667
Decreased total lymphocyte count Likely benign rs2151787951 RCV002227874
Decreased total neutrophil count Likely benign rs2151787951 RCV002227874
Associations from Text MiningDisease associations identified through Pubtator
Disease Name Relationship Type References
Acquired Immunodeficiency Syndrome Associate 19654554
Anemia Associate 34807970
Anti Neutrophil Cytoplasmic Antibody Associated Vasculitis Associate 36769297
Arthritis Associate 30770760
Arthritis Rheumatoid Associate 28774272, 36973646
Atelosteogenesis type 2 Associate 39195217
Atrial Fibrillation Associate 32389013
Atrophy Associate 34160562
Atypical Hemolytic Uremic Syndrome Associate 17182750, 20016463, 21103695, 22410797, 23356914, 24652797, 26559391, 29670616, 32540405, 33725982, 34721423, 36306276, 36755127
Basal Laminar Drusen Associate 22933840