C-fos

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V-fos FBJ murine osteosarcoma viral oncogene homolog

PDB rendering based on 1a02.

Available structures: 1a02, 1fos, 1s9k

Identifiers

Symbols

FOS; c-fos

External IDs

OMIM: 164810 MGI: 95574 HomoloGene: 3844

Gene ontology
Molecular function:	• transcription factor activity • specific RNA polymerase II transcription factor activity • sequence-specific DNA binding • protein dimerization activity
Cellular component:	• nucleus • transcription factor complex
Biological process:	• DNA methylation • regulation of transcription from RNA polymerase II promoter • inflammatory response • nervous system development

RNA expression pattern

More reference expression data

Orthologs

Human

Mouse

Refseq

NM_005252 (mRNA)
NP_005243 (protein)

NM_010234 (mRNA)
NP_034364 (protein)

Location

Chr 14: 74.82 - 74.82 Mb

Chr 12: 86.36 - 86.37 Mb

Pubmed search

[1]

[2]

In molecular biology, c-Fos is a cellular proto-oncogene belonging to the immediate early gene family of transcription factors. c-Fos has a leucine-zipper DNA binding domain, and a transactivation domain at the C-terminus. Transcription of c-Fos is upregulated in response to many extracellular signals, e.g. growth factors. Additionally, phosphorylation by MAPK, PKA, PKC or cdc2 alters the activity and stability of c-Fos. Members of the Fos family dimerise with Jun to form the AP-1 transcription factor, which upregulates transcription of a diverse range of genes involved in everything from proliferation and differentiation to defense against invasion and cell damage.

The AP-1 complex has been implicated in transformation and progression of cancer, and both Fos and Jun were first discovered in rat fibroblasts. Fos was discovered as the transforming gene of the FBJ MSV and jun as the oncogene from avian sarcoma virus 17 (junana = 17)

The viral homologue of c-Fos, v-Fos, is found in the retrovirus Finkel–Biskis–Jinkins murine osteogenic sarcoma virus.

Neuroscientists measure expression of c-fos as an indirect marker of neuronal activity because c-fos is often expressed when neurons fire action potentials.

1 See also
2 Further reading
3 References
4 External links

References

Karin Milde-Langosch, 2005. The Fos family of transcription factors and their role in tumourigenesis. European Journal of Cancer 41(16):2449-2461. Abstract + Full Text

External links

MeSH c-fos+Proteins
MeSH c-fos+Genes

v • d • e Neoplasm: Oncogenes/Proto-oncogenes

Extracellular/ Growth factor	c-Sis/PDGF

Cell membrane/ receptor/tyrosine kinases	ErbB/c-ErbB (HER2/neu, Her 3) - c-Kit - c-Met - c-Ret - Flt3

Cytoplasm/ Signal transduction	c-Src MAPK/ERK pathway (c-Ras/HRAS, c-Raf) Akt/PKB signaling pathway (c-Akt) Wnt signaling pathway (Beta-catenin)

Nucleus/Transcription factors	AP-1 (c-Fos, c-Jun) - c-Myc - c-Mdm2

Other/ungrouped	c-Bcl-2 - Notch - Stathmin

see also tumor suppressor genes

Transcription factors and intracellular receptors

(1) Basic domains

(1.1) Basic leucine zipper (bZIP)	Activating transcription factor (AATF, 1, 2, 3, 4, 5, 6, 7) • AP-1 (c-Fos, FOSB, FOSL1, FOSL2, c-Jun, JUNB, JUND) • BACH (1, 2) • BATF • BLZF1 • C/EBP (α, β, γ, δ, ε, ζ) • CREB (1, 3, L1) • CREM • DBP • DDIT3 • GABPA • HLF • MAF (B, F, G, K) • NFE (2, L1, L2) • NRL • NRF1 • XBP1

(1.2) Basic helix-loop-helix (bHLH)	ATOH1 • AhR • AHRR • ARNT • ASCL1 • BHLHB2 • BMAL (ARNTL, ARNTL2) • CLOCK • EPAS1 • HAND (1, 2) • HES (5, 6) • HEY (1, 2, L) • HES1 • HIF (1A, 3A) • ID (1, 2, 3, 4) • LYL1 • MXD4 • MYCL1 • MYCN • Myogenic regulatory factors (MyoD, Myogenin, MYF5, MYF6) • Neurogenins • NeuroD (1, 2) • NPAS (1, 2, 3) • OLIG (1, 2) • Pho4 • Scleraxis • TAL1 • Twist • USF1

(1.3) bHLH-ZIP	AP-4 • MAX • MITF • MNT • MLX • MXI1 • Myc • SREBP (1, 2)

(1.4) NF-1	NFI (A, B, C, X) • SMAD (R-SMAD (1, 2, 3, 5, 9) - I-SMAD (6, 7) - 4)

(1.5) RF-X	RFX (1, 2, 3, 4, 5, ANK)

(1.6) Basic helix-span-helix (bHSH)	AP-2 (α, β, γ, δ, ε)

(2) Zinc finger DNA-binding domains

(2.1) Nuclear receptor (Cys₄)	subfamily 1 (Thyroid hormone (α, β), CAR, FXR, LXR (α, β), PPAR (α, β/δ, γ), PXR, RAR (α, β, γ), ROR (α, β, γ), Rev-ErbA (α, β), VDR) subfamily 2 (COUP-TF (I, II), Ear-2, HNF4 (α, γ), PNR, RXR (α, β, γ), Testicular receptor (2, 4), TLX) subfamily 3 (Steroid hormone (Androgen, Estrogen (α, β), Glucocorticoid, Mineralocorticoid, Progesterone), Estrogen related (α, β, γ)) subfamily 4 NUR (NGFIB, NOR1, NURR1) • subfamily 5 (LRH-1, SF1) • subfamily 6 (GCNF) • subfamily 0 (DAX1, SHP)

(2.2) Other Cys₄	GATA (1, 2, 3, 4, 5, 6) • MTA (1, 2, 3) • TRPS1

(2.3) Cys₂His₂	General transcription factors (TFIIA, TFIIB, TFIID, TFIIE, TFIIF (1, 2), TFIIH (1, 2, 4, 2I, 3A, 3C1, 3C2)) ATBF1 • BCL (6, 11A, 11B) • CTCF • E4F1 • EGR (2, 3) • ERV3 • GFI1 • GLI-Krüppel family (1, 2, 3, S2, YY1) • HIC (1, 2) • HIVEP (1, 2, 3) • IKZF (1, 2, 3) • ILF (2, 3) • KLF (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 17 ) • MTF1 • MYT1 • OSR1 • SP (1, 2, 4, 7) • Zbtb7 (7A, 7B) • ZBTB (16, 17, 20, 32, 33, 40) • zinc finger (3, 7, 9, 10, 19, 22, 24, 33B, 34, 35, 41, 43, 44, 51, 74, 143, 146, 148, 165, 202, 217, 219, 238, 239, 259, 267, 268, 281, 295, 318, 330, 346, 350, 365, 366, 384, 423, 451, 452, 471, 593, 638, 649, 655)

(2.4) Cys₆	HIVEP1

(2.5) Alternating composition	AIRE • DIDO1 • GRLF1 • ING (1, 2, 4) • JARID (1A, 1B, 1C, 1D, 2) • JMJD1B

(3) Helix-turn-helix domains

(3.1) Homeo domain	ARX • CDX (1, 2) • CRX • CUTL1 • DLX (3, 4, 5) • EMX2 • EN (1, 2) • FHL (1, 2, 3) • HESX1 • HHEX • HLX • Homeobox (A1, A3, A4, A5, A7, A9, A10, A11, A13, B1, B2, B3, B4, B5, B6, B7, B8, B9, B13, C4, C5, C6, C8, C9, C10, C11, C13, D1, D3, D4, D8, D9, D10, D11, D12, D13) • HOPX • MEIS (1, 2) • MEOX2 • MNX1 • MSX (1, 2) • NANOG • NKX (2-1, 2-2, 2-3, 2-5, 3-1, 3-2) • PBX (1, 2, 3) • PHF (1, 3, 6, 8, 10, 16, 17, 20, 21A) • PITX (1, 2, 3) • POU domain (PIT-1, BRN-3: A, B, C, Octamer transcription factor: 1, 2, 3/4, 6, 7, 11) • OTX (1, 2) • PDX1

(3.2) Paired box	PAX (1, 2, 3, 4, 5, 6, 7, 8, 9)

(3.3) Fork head / winged helix	E2F (1, 2, 3, 4, 5) • FOX proteins (C1, C2, E1, G1, H1, K2, L2, M1, N3, O1A, O3A, O4, P1, P2, P3)

(3.4) Heat Shock Factors	HSF (1, 2, 4)

(3.5) Tryptophan clusters	ELF (4, 5) • EGF • ELK (1, 3, 4) • ERF • ERG • ETS (1, 2, SPIB) • ETV (1, 4, 5, 6) • FLI1 • Interferon regulatory factors (1, 2, 3, 4, 5, 6, 7, 8) • MYB • MYBL2

(3.6) TEA domain	transcriptional enhancer factor (1, 2, 3, 4)

(4) β-Scaffold factors with minor groove contacts

(4.1) Rel homology region	NF-κB (NFKB1, NFKB2, REL, RELA, RELB) • NFAT (C1, C2, C3, C4, 5)

(4.2) STAT	STAT (1, 2, 3, 4, 5, 6)

(4.3) p53	p53 • TBX (1, 2, 3, 5, 19, 21, 22)

(4.4) MADS box	Mef2 (A, B, C, D) • SRF

(4.6) TATA binding proteins	TBP • TBPL1

(4.7) High mobility group	HMGB (1, 2, 3) • HNF (1A, 1B) • LEF1 • SOX (2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 18, 21) • SRY • SSRP1 • TCF (3, 4) • TOX (1, 2, 3, 4)

(4.10) Cold-shock domain	CSDA, YBX1

(4.11) Runt	CBF (CBFA2T2, CBFA2T3, RUNX1, RUNX2, RUNX3, RUNX1T1)

(0) Other transcription factors

(0.2) HMGI(Y)	HMGA (1, 2) • HBP1

(0.3) Pocket domain	Rb • RBL1 • RBL2

(0.5) AP-2/EREBP-related factors	Apetala 2 • EREBP • B3

(0.6) Miscellaneous	ARID (1A, 1B, 2, 3A, 3B, 4A) • CAP • IFI (16, 35) • MLL (2, 3, T1) • MNDA • NFY (A, B, C) • Rho/Sigma

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C-fos

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