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- **********************************************
- * Fos/jun DNA-binding basic domain signature *
- **********************************************
-
- Recent studies (reviewed in [1,2]) have allowed the characterization of a
- family of eukaryotic transcription factors that bind DNA at the consensus
- sequence 5'-TGA(C/G)TCA-3'. Proteins known to belong to this family are
- listed below (references are only provided for recently determined sequences).
-
- - Yeast GCN4 transcription factor, a component of the general control system
- that regulates the expression of amino acid-synthesizing enzymes in
- response to amino acid starvation, and the related Neurospora crassa cpc-1
- protein.
- - Neurospora crassa cys-3 which turns on the expression of structural genes
- which encode sulfur-catabolic enzymes [3].
- - Transcription factor AP-1, which binds selectively to enhancer elements in
- the cis control regions of SV40 and metallothionein IIA. AP-1, also known
- as c-jun, is the cellular homolog of the avian sarcoma virus 17 (ASV17)
- oncogene v-jun.
- - jun-B and jun-D, probable transcription factors which are highly similar
- to jun/AP-1.
- - Epstein-Barr virus trans-activator protein BZLF1 [4].
- - Maize Opaque 2 [5], a trans-acting transcriptional activator involved in
- the regulation of the production of zein proteins during endosperm.
- - The fos protein, a proto-oncogene that forms a non-covalent dimer with
- c-jun.
- - The fos-related proteins fra-1, and fos B.
-
- It has been shown [6] that there are extensive similarities between the DNA-
- binding domain of GCN4, which is located in the C-terminal of the protein, and
- the corresponding region of jun/AP1. The region of highest similarity is a
- domain of about 20 amino acid residues; about half of these residues are basic
- (Arg or Lys).
-
- In most of these protein this domain is located upstream of the leucine zipper
- domain (see the relevant section).
-
- -Consensus pattern: [RK](2)-x-[RKS]-N-x(2)-[STA](2)-x-[RK]-x-R-x-[RK]
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
-
- -Note: the residue in position 4 is either Arg or Lys except in Opaque-2 where
- it is Ser.
-
- -Last update: December 1991 / Text revised.
-
- [ 1] Vogt P.K., Tjian R.
- Oncogene 3:3-7(1988).
- [ 2] Curran T., Franza B.R. Jr.
- Cell 55:395-397(1988).
- [ 3] Fu Y.-H., Marzluf G.A.
- J. Biol. Chem. 265:11942-11947(1990).
- [ 4] Farrel P., Rowe D.T., Rooney C.M., Kouzarides T.
- EMBO J. 8:127-132(1989).
- [ 5] Hartings H., Maddaloni M., Lazzaroni N., Di Fonzo N., Motto M.,
- Salamini F., Thompson R.D.
- EMBO J. 8:2795-2801(1989).
- [ 6] Vogt P.K., Bos T.J., Doolittle R.F.
- Proc. Natl. Acad. Sci. U.S.A. 84:3316-3319(1987).
-