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- ***********************************************************
- * Growth factor and cytokines receptors family signatures *
- ***********************************************************
-
- A number of receptors for lymphokines, hematopoeitic growth factors and growth
- hormone-related molecules have been found [1 to 5] to share a common binding
- domain. Receptors known to belong to this family are:
-
- - Cytokine receptor common beta chain. This chain is common to the IL-3,
- IL-5 and GM-CSF receptors.
- - Cytokine receptor common gamma chain. This chain is common to the IL-2,
- IL-4, IL-7 and IL-13 receptors.
-
- - Ciliary neurotrophic factor receptor (CNTFR).
- - Erythropoietin receptor (EPOR).
- - Granulocyte colony-stimulating factor receptor (G-CSFR).
- - Granulocyte-macrophage colony-stimulating factor receptor alpha chain (GM-
- CSFR).
- - Interleukin-2 receptor beta chain (IL2R-beta).
- - Interleukin-3 receptor alpha chain (IL3R).
- - Interleukin-4 receptor alpha chain (IL4R).
- - Interleukin-5 receptor alpha chain (IL5R).
- - Interleukin-6 receptor (IL6R).
- - Interleukin-7 receptor alpha chain (IL7R).
- - Interleukin-9 receptor (IL9R).
- - Growth hormone receptor (GRHR).
- - Prolactin receptor (PRLR).
-
- The conserved region constitutes all or part of the extracellular ligand-
- binding region and is about 200 amino acid residues long. In the N-terminal of
- this domain there are two pairs of cysteines known, in the growth hormone
- receptor, to be involved in disulfide bonds.
-
- +----------------------------------------xxxxxxx---------------------------+
- | C C C C Extracellular XXXXXXX Cytoplasmic |
- +-|-|-------|--|-------------------------xxxxxxx---------------------------+
- | | | | Transmembrane
- +-+ +--+
-
- We have used two patterns to detect this family of receptors. The first one
- is derived from the first N-terminal disulfide loop, the second is a
- tryptophan-rich pattern located at the C-terminal extremity of the
- extracellular region.
-
- -Consensus pattern: C-[LVFYR]-x(7,8)-[STIVDN]-C-x-W
- [The two C's are linked by a disulfide bond]
- -Sequences known to belong to this class detected by the pattern: ALL, except
- for CNTFR, IL3R-alpha, IL5R-alpha and IL7R-alpha.
- -Other sequence(s) detected in SWISS-PROT: 13.
-
- -Consensus pattern: [STGL]-x-W-[SG]-x-W-S
- -Sequences known to belong to this class detected by the pattern: ALL, except
- for cytokine receptor common gamma chain, IL3R-alpha and growth hormone
- receptors.
- -Other sequence(s) detected in SWISS-PROT: 30.
-
- -Last update: June 1994 / Text revised.
-
- [ 1] Bazan J.F.
- Biochem. Biophys. Res. Commun. 164:788-795(1989).
- [ 2] Bazan J.F.
- Proc. Natl. Acad. Sci. U.S.A. 87:6934-6938(1990).
- [ 3] Cosman D., Lyman S.D., Idzerda R.L., Beckmann M.P., Park L.S.,
- Goodwin R.G., March C.J.
- Trends Biochem. Sci. 15:265-270(1990).
- [ 4] d'Andrea A.D., Fasman G.D., Lodish H.F.
- Cell 58:1023-1024(1989).
- [ 5] d'Andrea A.D., Fasman G.D., Lodish H.F.
- Curr. Opin. Cell Biol. 2:648-651(1990).
-