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- **********************************************
- * Speract receptor repeated domain signature *
- **********************************************
-
- The receptor for the sea urchin egg peptide speract is a transmembrane
- glycoprotein of 500 amino acid residues [1]. Structurally it consists of a
- large extracellular domain of 450 residues, followed by a transmembrane region
- and a small cytoplasmic domain of 12 amino acids. The extracellular domain
- contains four repeats of a 115 amino acids domain. There are 17 positions that
- are perfectly conserved in the four repeats, among them are six cysteines, six
- glycines, and three glutamates.
-
- Such a domain is also found, once, in the C-terminal section of mammalian
- macrophage scavenger receptor type I [2], a membrane glycoproteins implicated
- in the pathologic deposition of cholesterol in arterial walls during
- atherogenesis.
-
- The signature pattern that we derived spans part of the N-terminal section of
- the domain and contains 8 of the 17 conserved residues.
-
- -Consensus pattern: G-x(5)-G-x(2)-E-x(6)-W-G-x(2)-C-x(3)-[FYW]-x(8)-C-x(3)-G
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
- -Last update: May 1991 / Text revised.
-
- [ 1] Dangott J.J., Jordan J.E., Bellet R.A., Garbers D.L.
- Proc. Natl. Acad. Sci. U.S.A. 86:2128-2132(1989).
- [ 2] Freeman M., Ashkenas J., Rees D.J., Kingsley D.M., Copeland N.G.,
- Jenkins N.A., Krieger M.
- Proc. Natl. Acad. Sci. U.S.A. 87:8810-8814(1990).
-