title: Isolation of two neuropeptides in the AKH/RPCH-family from horseflies (Diptera).
abstract: Two neuropeptides (DCCI and DCCII) in the adipokinetic/red pigment concentrating hormone-family have been isolated and purified from the corpora cardiaca of horseflies (Diptera : Tabanidae). Both peptides were purified by a sequence of three reversed phase-high performance liquid chromatographic steps. Amino acid analysis of the purified peptides indicated the following composition for DCCI: Glx(l), Gly(1), Leu(1), Phe(1), Pro(1), Thr(2) and for DCCII: Glx(1), Gly(2), Leu(1), Phe(1), Pro(1), Thr(2), and Tyr(1). Photodiode array ultraviolet spectroscopy indicated the presence of tryptophan in both DCCI and II. Both DCCI and II had red pigment concentrating hormone activity in the crab, Uca pugilator.
authors.affiliation: Agricultural Environmental Quality Institute U.S. Department of Agriculture Beltsville, Maryland 20705.
authors.forename: H
authors.initials: H
authors.lastname: Jaffe
authors.forename: A K
authors.initials: AK
authors.lastname: Raina
authors.forename: B A
authors.initials: BA
authors.lastname: Fraser
authors.forename: P
authors.initials: P
authors.lastname: Keim
authors.forename: K R
authors.initials: KR
authors.lastname: Rao
authors.forename: Y S
authors.initials: YS
authors.lastname: Zhang
authors.forename: J L
authors.initials: JL
authors.lastname: Lancaster
authors.forename: D K
authors.initials: DK
authors.lastname: Hayes
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004175:Diptera / Q000032:analysis*; D005260:Female; D009479:Neuropeptides / Q000302:isolation & purification*; D013045:Species Specificity; D013056:Spectrophotometry, Ultraviolet
chemical_list: D000596:Amino Acids; D009479:Neuropeptides