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- *************************
- * HCP repeats signature *
- *************************
-
- The histidine-rich calcium-binding protein (HCP) of sarcoplasmic reticulum [1]
- may play a role in the regulation of calcium sequestration or release in the
- SR of skeletal and cardiac muscle. This protein is very acidic (31% of Asp and
- Glu) and rich in histidine (13%). The sequence of HCP contains 10 tandem
- repeats of a 26 to 29 amino acid residues domain. This domain starts with an
- invariant hexapeptide (HRHRGH), followed by a stretch of acidic residues. The
- end of the domain consist of an almost invariant nonapeptide (STESDRHQA). The
- highly acidic central cores of each repeat are likely to constitute the
- calcium-binding sites of HCP.
-
- The pattern we have developed comprises the beginning of the domain and part
- of the central acidic stretch.
-
- -Consensus pattern: H-R-H-R-G-H-x(2)-[DE](7)
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
- -Last update: April 1990 / First entry.
-
- [ 1] Hofmann S.L., Goldstein J.L., Orth K., Moomaw C.R., Slaughter C.A.,
- Brown M.S.
- J. Biol. Chem. 264:18083-18090(1989).
-