کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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2006401 | 1066339 | 2011 | 6 صفحه PDF | دانلود رایگان |
We have used an in silico approach to identify a gene from the blood-gorging vector, Rhodnius prolixus, that is predicted to produce an insect kinin prepropeptide. The prepropeptide is 398 amino acids in length and can potentially produce a large number of kinin-related peptides following post-translational processing. A comparison with other insect kinin precursor sequences demonstrates greatest conservation at the C-terminal region of the kinin peptides. Multiple peptides predicted from the kinin gene are phenotypically expressed in R. prolixus, as revealed by MALDI-TOF MS MS, including 12 kinins and one kinin precursor peptide (KPP). Six of these peptides are characterized by the typical insect kinin C-terminal motif FX1X2WGamide and five of these are also found as truncated forms. Five peptides were identified with an atypical, though similar, FX1X2WAamide C-terminus. There is also peptide with a C-terminal DDNGamide motif and a number of non-amidated peptides.
Journal: Peptides - Volume 32, Issue 3, March 2011, Pages 469–474