home *** CD-ROM | disk | FTP | other *** search
- ******************************************************
- * S-100/ICaBP type calcium binding protein signature *
- ******************************************************
-
- S-100 are small acidic calcium and zinc-binding proteins [1] abundant in the
- brain. They have two different types of calcium-binding sites: a low affinity
- one with a special structure and a 'normal' EF-hand type high affinity site.
- The vitamin-D dependent intestinal calcium-binding proteins (ICaBP) also
- belong to this family of proteins. In the past years the sequences of many
- new members of this family have been determined (for reviews see [2,3]); in
- most cases the function of these proteins is not yet known.
-
- - Calcyclin (Prolactin receptor associated protein (PRA); 2a9; 5B10).
- - Calpactin I light chain (p10; p11; 42c).
- - Calgranulin A (cystic fibrosis antigen (CFAg); MIF related protein 8 (MRP-
- 8); p8).
- - Calgranulin B (MIF related protein 14 (MRP-14); p14).
- - Calgranulin C.
- - Calgizzarin (S-100C).
- - Chemotactic cytokine CP-10 [4].
- - Placental calcium-binding protein (CAPL) (18a2; peL98; 42a; p9K; MTS1;
- metastatin).
- - Protein S-100D [5].
- - Protein S-100E [5].
- - Protein S-100L (CAN19).
- - Placental protein S-100P.
- - Protein MRP-126 [6].
-
- A number of these proteins are known to bind calcium while others are not (p10
- for example). Our EF-hand detecting pattern (see the relevant section) will
- fail to pick those proteins which have lost their calcium-binding properties.
- We developed a pattern which unambiguously picks up proteins belonging to this
- family. This pattern spans the region of the EF-hand high affinity site but
- makes no assumptions on the calcium-binding properties of this site.
-
- -Consensus pattern: [LIVMFYW](2)-x(2)-L-D-x(3)-[DN]-x(3)-[DNSG]-[FY]-x-[ES]-
- [FYVC]-x(2)-[LIVMFS]-[LIVMF]
- -Sequences known to belong to this class detected by the pattern: ALL, except
- for Xenopus calpactin I light chain.
- -Other sequence(s) detected in SWISS-PROT: rat calcineurin-like protein, a
- classical EF-hand protein.
-
- -Expert(s) to contact by email: Cox J.A.
- cox@sc2a.unige.ch
- Kretsinger R.H.
- rhk5i@virginia.bitnet
-
- -Last update: June 1994 / Pattern and text revised.
-
- [ 1] Baudier J.
- (In) Calcium and Calcium Binding proteins, Gerday C., Bollis L.,
- Giller R., Eds., pp102-113, Springer Verlag, Berlin, (1988).
- [ 2] Moncrief N.D., Kretsinger R.H., Goodman M.
- J. Mol. Evol. 30:522-562(1990).
- [ 3] Kligman D., Hilt D.C.
- Trends Biochem. Sci. 13:437-443(1988).
- [ 4] Lackmann M., Cornish C.J., Simpson R.J., Moritz R.L., Geczy C.L.
- J. Biol. Chem. 267:7499-7504(1992).
- [ 5] Engelkamp D., Schaefer B.W., Mattei M.G., Erne P., Heizmann C.W.
- Proc. Natl. Acad. Sci. U.S.A. 90:6547-6551(1993).
- [ 6] Nakano T., Graf T.
- Oncogene 7:527-534(1992).
-