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Title

Allatostatic neuropeptides from the cockroach Blattella germanica (L.) (Dictyoptera, Blattellidae). Identification, immunolocalization and activity

AuthorsBellés, Xavier ; Maestro, José L. ; Piulachs, Maria-Dolors ; Johnsen, Anders H.; Duve, Hanne; Thorpe, Alan J.
KeywordsCorpora allata
Juvenile hormone
Allatostatin
Issue Date21-Oct-1994
PublisherElsevier
CitationRegulatory Peptides 53(3): 237-247 (1994)
AbstractFour allatostatic neuropeptides were isolated from extracts of the brain of the cockroach Blattella germanica. The primary structures of these peptides were assigned as Leu-Tyr-Asp-Phe-Gly-Leu-NH2 (BLAST-1), Asp-Arg-Leu-Tyr-Ser-Phe-Gly-Leu-NH2 (BLAST-2), Ala-Gly-Ser-Asp-Gly-Arg-Leu-Tyr-Ser-Phe-Gly-Leu-NH2 (BLAST-3) and Ala-Pro-Ser-Ser-Ala-Gln-Arg-Leu-Tyr-Gly-Phe-Gly-Leu-NH2 (BLAST-4). Each of the peptides showed C-terminal amino acid sequence similarity to cockroach allatostatins and blowfly callatostatins. The four peptides inhibited in vitro juvenile hormone production by corpora allata from virgin females of B. germanica. Immunoreactivity against allatostatins was seen in the lateral neurosecretory neurons and in the axonal pathway leading to the corpora allata.
Publisher version (URL)http://doi.org/10.1016/0167-0115(94)90172-4
URIhttp://hdl.handle.net/10261/147947
DOI10.1016/0167-0115(94)90172-4
Identifiersissn: 0167-0115
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