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- ****************************************
- * Parathyroid hormone family signature *
- ****************************************
-
- Parathyroid hormone (PTH) is a polypeptidic hormone that elevates calcium
- level by dissolving the salts in bone and preventing their renal excretion.
- PTH is a protein of about 80 amino acid residues, but its biological activity
- seems to be contained within the first 34 residues.
-
- PTH is structurally related to a protein called 'parathyroid hormone-related
- protein' (PTH-rP) [1] which seems to play a physiological role in lactation,
- possibly as a hormone for the mobilization and/or transfer of calcium to the
- milk. PTH-rP is a protein of 141 amino acids. As for PTH, the first 34
- residues are sufficient to mediate the biological activity of PTH-rP. PTH and
- PTH-rP bind to the same G-protein coupled receptor.
-
- The signature pattern we selected for these proteins is derived from conserved
- residues in the N-terminal extremity of PTH and PTH-rP, spanning residues 2 to
- 12.
-
- -Consensus pattern: V-S-E-x-Q-x(2)-H-x(2)-G
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
- -Last update: June 1992 / Text revised.
-
- [ 1] Martin T.J., Allan E.H., Caple I.W., Care A.D., Danks J.A.,
- Diefenbach-Jagger H., Ebeling P.R., Gillepsie M.T., Hammonds G.,
- Heath J.A., Hudson P.J., Kemp B.E., Kubota M., Kukreja S.C.,
- Moseley J.M., Ng K.W., Raisz L.G., Rodda C.P., Simmons H.A., Suva L.J.,
- Wettenhall R.E.H., Wood W.I.
- Recent Prog. Horm. Res. 45:467-502(1989).
-