Identification of tick periviscerokinin, the first neurohormone of Ixodidae: Single cell analysis by means of MALDI-TOF/TOF mass spectrometry
The first peptidergic neurohormone from the ticks Ixodes ricinus and Boophilus microplus has been identified by using a combination of immunocytochemistry and mass spectrometric analysis of single cells. The novel peptide (Ixori-PVK, PALIPFPRV-NH 2) shows a high sequence homology with members of the...
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Published in | Biochemical and biophysical research communications Vol. 338; no. 4; pp. 1860 - 1864 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
Elsevier Inc
30.12.2005
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Subjects | |
Online Access | Get full text |
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Summary: | The first peptidergic neurohormone from the ticks
Ixodes ricinus and
Boophilus microplus has been identified by using a combination of immunocytochemistry and mass spectrometric analysis of single cells. The novel peptide (Ixori-PVK, PALIPFPRV-NH
2) shows a high sequence homology with members of the insect periviscerokinin/CAP2
b peptides that in insects are involved in the regulation of water balance. The function of this peptide in ticks is still unknown, but these pests consume large amounts of blood in a single blood meal which is a challenge for the regulation of diuretic processes. Thus, the novel peptide may be involved in one of the key physiological processes in ticks. High energy collision-induced dissociation was successfully used to distinguish between Leu/Ile ambiguities in single cell preparations. This is the first successful de novo sequencing of a peptide from single cell preparations of arthropods. |
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Bibliography: | http://hdl.handle.net/10113/36422 http://dx.doi.org/10.1016/j.bbrc.2005.10.165 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0006-291X 1090-2104 1090-2104 |
DOI: | 10.1016/j.bbrc.2005.10.165 |