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- ************************
- * Pyrokinins signature *
- ************************
-
- Pyrokinins are insect neuropeptides that mediate visceral muscle contractile
- activity (myotropic activity) [1]. The pyrokinins are peptides of 8 to 16
- amino acids that share the amide-blocked C-terminal sequence Phe-Xaa-Pro-Arg-
- Leu-NH2, where Xaa is either Gly, Ser, Thr, or Val. This pentapeptide is
- sufficient to elicit a significant myotropic activity. The same C-terminal
- sequence is present in the following insect neuropeptides:
-
- - Pheromone biosynthesis activating neuropeptide (PBAN). PBAN is a hormone
- that controls sex pheromone production in female moths as well as
- eliciting pyrokinin-like myotropic activity.
- - Pheromonotropin [2], from Pseudaletia separata, which also controls sex
- pheromone production.
- - Bombyx mori diapause hormone (DH).
-
- -Consensus pattern: F-[GSTV]-P-R-L-[G>]
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: human mitochondrial aldehyde
- dehydrogenase.
-
- -Note: if the sequence is processed, the peptide ends with a C-terminal
- amidated Leu while in a precursor sequence it is always followed by a Gly
- which subsequently provides the amide group.
-
- -Last update: December 1992 / Text revised.
-
- [ 1] Nachman R.J., Roberts V.A., Dyson H.J., Holman G.M., Tainer J.A.
- Proc. Natl. Acad. Sci. U.S.A. 88:4518-4522(1991).
- [ 2] Matsumoto S., Fonagy A., Kurihara M., Uchiumi K., Nagamine T.,
- Chijimatsu M., Mitsui T.
- Biochem. Biophys. Res. Commun. 182:534-539(1992).
-