CBFB

Core-binding factor subunit beta is a protein that in humans is encoded by the CBFB gene.^[5][6]

CBFB
Available structures PDB Ortholog search: PDBe RCSB List of PDB id codes 1CL3, 1E50, 1H9D, 4N9F
Identifiers
Aliases	CBFB, PEBP2B, core-binding factor, beta subunit, core-binding factor beta subunit, core-binding factor subunit beta
External IDs	OMIM: 121360; MGI: 99851; HomoloGene: 11173; GeneCards: CBFB; OMA:CBFB - orthologs
Gene location (Human) Chr. Chromosome 16 (human)[1] Band 16q22.1 Start 67,028,984 bp[1] End 67,101,058 bp[1]
Gene location (Mouse) Chr. Chromosome 8 (mouse)[2] Band 8 D3|8 53.04 cM Start 105,897,306 bp[2] End 105,944,621 bp[2]
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in secondary oocyte sural nerve tibia Achilles tendon periodontal fiber tibialis anterior muscle cartilage tissue bone marrow cells islet of Langerhans Epithelium of choroid plexus Top expressed in trigeminal ganglion calvaria triceps brachii muscle sternocleidomastoid muscle quadriceps femoris muscle extensor digitorum longus muscle temporal muscle vastus lateralis muscle plantaris muscle body of femur More reference expression data BioGPS More reference expression data
Gene ontology Molecular function DNA-binding transcription factor activity transcription coactivator activity protein binding DNA binding DNA-binding transcription factor activity, RNA polymerase II-specific transcription coregulator activity sequence-specific DNA binding Cellular component nucleus membrane nucleoplasm core-binding factor complex Biological process definitive hemopoiesis myeloid cell differentiation protein polyubiquitination cell maturation transcription by RNA polymerase II ossification osteoblast differentiation positive regulation of transcription by RNA polymerase II lymphocyte differentiation regulation of cytokine-mediated signaling pathway regulation of Wnt signaling pathway regulation of intracellular estrogen receptor signaling pathway regulation of regulatory T cell differentiation regulation of keratinocyte differentiation regulation of myeloid cell differentiation regulation of megakaryocyte differentiation regulation of B cell receptor signaling pathway regulation of hematopoietic stem cell differentiation regulation of bicellular tight junction assembly transcription initiation from RNA polymerase II promoter negative regulation of transcription by RNA polymerase II negative regulation of CD4-positive, alpha-beta T cell differentiation positive regulation of CD8-positive, alpha-beta T cell differentiation Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 865 12400 Ensembl ENSG00000067955 ENSMUSG00000031885 UniProt Q13951 Q08024 RefSeq (mRNA) NM_001755 NM_022845 NM_001368707 NM_001368708 NM_001368709 NM_001368710 NM_001161456 NM_001161457 NM_001161458 NM_022309 RefSeq (protein) NP_001746 NP_074036 NP_001355636 NP_001355637 NP_001355638 NP_001355639 NP_001154928 NP_001154929 NP_001154930 NP_071704 Location (UCSC) Chr 16: 67.03 – 67.1 Mb Chr 8: 105.9 – 105.94 Mb PubMed search [3] [4]
Wikidata
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The protein encoded by this gene is the beta subunit of a heterodimeric core-binding transcription factor belonging to the PEBP2/CBF transcription factor family which master-regulates a host of genes specific to hematopoiesis (e.g., RUNX1) and osteogenesis (e.g., RUNX2). The beta subunit is a non-DNA binding regulatory subunit; it allosterically enhances DNA binding by the alpha subunit as the complex binds to the core site of various enhancers and promoters, including murine leukemia virus, polyomavirus enhancer, T-cell receptor enhancers and GM-CSF promoters. Alternative splicing generates two mRNA variants, each encoding a distinct carboxyl terminus. In some cases, a pericentric inversion of chromosome 16 [inv(16)(p13q22)] produces a chimeric transcript consisting of the N terminus of core-binding factor beta in a fusion with the C-terminal portion of the smooth muscle myosin heavy chain 11. This chromosomal rearrangement is associated with acute myeloid leukemia of the M4Eo subtype. Two transcript variants encoding different isoforms have been found for this gene.^[7]

Mutations in CBFB are implicated in cases of breast cancer.^[8]

Core binding factor acute myeloid leukaemia is a cancer related to genetic changes in the CBF gene. It is most commonly caused by an inversion of particular region of chromosome 16; however it can also be caused by translocation between copies of chromosome 16. The rearrangements cause formation of CBF but with impaired function. This prevents proper differentiation of blood cells, leading to the formation of Myeloblast.^[9]

• Human CBFB genome location and CBFB gene details page in the UCSC Genome Browser.