C8B Gene Summary [Human]

This gene encodes one of the three subunits of the complement component 8 (C8) protein. C8 is composed of equimolar amounts of alpha, beta and gamma subunits, which are encoded by three separate genes. C8 is one component of the membrane attack complex, which mediates cell lysis, and it initiates membrane penetration of the complex. This protein mediates the interaction of C8 with the C5b-7 membrane attack complex precursor. In humans deficiency of this protein is associated with increased risk of meningococcal infections. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2013]

Details

Type
Protein Coding
Official Symbol
C8B
Official Name
complement C8 beta chain [Source:HGNC Symbol;Acc:HGNC:1353]
Ensembl ID
ENSG00000021852
Bio databases IDs NCBI: 732 Ensembl: ENSG00000021852
Aliases complement C8 beta chain
Synonyms 4930439B20Rik, C82, C8 beta, C8 β, complement C8 beta chain, complement C8 β chain, complement component 8, beta polypeptide, complement component 8, β polypeptide
Species
Human, Homo sapiens
OrthologiesMouseRat

Protein Domains

A protein domain is a distinct structural or functional region within a protein that can evolve, function, and exist independently of the rest of the protein chain. These domains in human C8B often fold into stable, three-dimensional structures and are associated with specific biological functions, such as binding to DNA, other proteins, or small molecules.
  • Thrombospondin type 1 repeats
  • Thrombospondin type 1 domain
  • binding protein
  • thrombospondin-1 motif
  • membrane-attack complex / perforin
  • MAC/Perforin domain
  • LDL receptor binding domain
  • LDLa
  • Spondin-like TSP1 domain
  • EGF-like domain

Pathways

Biological processes and signaling networks where the C8B gene in human plays a role, providing insight into its function and relevance in health or disease.

Top Findings

The most significant associations for this gene, including commonly observed domains, pathway involvement, and functional highlights based on current data.
disease
  • organismal death
  • non-insulin-dependent diabetes mellitus
  • nonalcoholic steatohepatitis
  • diethylnitrosamine-induced hepatocellular carcinoma
  • diethylnitrosamine-induced liver tumorigenesis
  • liver cancer
  • epithelial cancer
  • hepatitis B virus-related hepatocellular carcinoma
  • complement component C8 deficiency type 2
  • hemolysis
regulated by
  • SL 327
  • TYK2
  • methotrexate
  • HNF1A
  • levodopa
  • phytohemagglutinin
  • liraglutide
  • STAT5B

Subcellular Expression

Locations within the cell where the protein is known or predicted to be active, providing insight into its function and cellular context.
  • Extracellular Space
  • cellular membrane
  • plasma

Gene Ontology Annotations

Describes the biological processes, cellular components, and molecular functions associated with the human C8B gene, providing context for its role in the cell.

Biological Process

Functions and activities the gene product is involved in
  • complement activation
  • complement activation, alternative pathway
  • immune response
  • complement activation, classical pathway
  • killing of cells of other organism
  • positive regulation of immune response

Cellular Component

Where in the cell the gene product is active
  • membrane attack complex
  • extracellular space
  • extracellular vesicular exosome
  • membrane
  • extracellular region
  • plasma membrane

Gene-Specific Assays for Results You Can Trust

Streamline your workflow with assays designed for this gene. Our targeted dPCR and qPCR assays help you generate meaningful data – efficiently and accurately.