Maurocalcine

Maurocalcine
Structure of Maurocalcine, determined by NMR
Identifiers
Organism Scorpio maurus palmatus
Symbol MCa
PDB 1c6w
UniProt P60254
Other data

Maurocalcine is a protein isolated from the venom of the scorpion Maurus palmatus, which belongs to the family Chactidae. It was first reported by Fajloun et al. in 2000.[1]

It is 33 Amino acid residues in length, containing three disulphide bonds which folds into the inhibitor cystine knot motif.[2] It acts by modifying the activity of the type 1 ryanodine receptor.[1]

References

  1. 1.0 1.1 Fajloun, Z., Kharrat, R., Chen, C., Lecomte, E.D.L., Bichet, D., El Ayeb, M., Rochat, H., Allen, P.D., Pessah, I.N., De Waard, M., Sabatier, J.M. (2000). "Chemical synthesis and characterization of maurocalcine, a scorpion toxin that activates Ca2+ release channel/ryanodine receptors". FEBS Letters 469 (2–3): 179–185. doi:10.1016/S0014-5793(00)01239-4. PMID 10713267.
  2. Mosbah, A; Kharrat, R; Fajloun, Z; Renisio, J. G.; Blanc, E; Sabatier, J. M.; El Ayeb, M; Darbon, H (2000). "A new fold in the scorpion toxin family, associated with an activity on a ryanodine-sensitive calcium channel". Proteins: Structure, Function, and Genetics 40 (3): 436–42. doi:10.1002/1097-0134(20000815)40:3<436::AID-PROT90>3.0.CO;2-9. PMID 10861934.