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Tachykinin-related peptide precursors in two cockroach species

Content Provider	Scilit
Author	Predel, Reinhard Neupert, Susanne Roth, Steffen Derst, Christian Nässel, Dick R.
Copyright Year	2005
Description	Journal: The FEBS Journal Tachykinins and tachykinin-related peptides (TKRPs) play major roles in signaling in the nervous system and intestine of both invertebrates and vertebrates. Here we have identified cDNAs encoding precursors of multiple TKRPs from the cockroaches Leucophaea maderae and Periplaneta americana. All nine LemTKRPs that had been chemically isolated in earlier experiments could be identified on the precursor of L. maderae. Four previously unidentified LemTKRPs were found in addition on the precursor. The P. americana cDNA displayed an open reading frame very similar to that of L. maderae with 13 different TKRPs. MALDI-TOF mass spectra from tissues of both species confirms the presence of all the TKRPs encoded on the precursor plus two additional peptides that are cleavage products of the N-terminally extended TKRPs. A tissue-specific distribution of TKRPs was observed in earlier experiments at isolation from brain and midgut of L. maderae. Our data do not suggest a differential gene expression but a different efficacy in processing of LemTKRP-2 and Lem/PeaTKRP-3 in the brain and intestine, respectively. This results in a gut-specific accumulation of these extended peptides, whereas in the brain their cleavage products, LemTKRP-1 and LemTKRP-3(11-19), are most abundant. Mass spectrometric analysis demonstrated the occurrence of the different TKRPs in single glomeruli of the tritocerebrum and in cells of the optical lobe.
Related Links	http://onlinelibrary.wiley.com/doi/10.1111/j.1742-4658.2005.04752.x/pdf
Ending Page	3375
Page Count	11
Starting Page	3365
e-ISSN	17424658
DOI	10.1111/j.1742-4658.2005.04752.x
Journal	The FEBS Journal
Issue Number	13
Volume Number	272
Language	English
Publisher	Wiley-Blackwell
Publisher Date	2005-06-14
Access Restriction	Open
Subject Keyword	Journal: The FEBS Journal Biochemistry and Molecular Biology Brain‐gut Peptides Insect Neuropeptide Mass Spectrometry Periplaneta Americana Leucophaea Maderae
Content Type	Text
Resource Type	Article

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