Journal
INSECT MOLECULAR BIOLOGY
Volume 18, Issue 2, Pages 223-232Publisher
WILEY
DOI: 10.1111/j.1365-2583.2008.00858.x
Keywords
pro-phenoloxidase; phenoloxidase; insect immunity; melanin formation; activation; Drosophila melanogaster
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Funding
- Ministry of Education, Culture, Sports and Technology [16780038]
- Grants-in-Aid for Scientific Research [16780038] Funding Source: KAKEN
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The fruitfly, Drosophila melanogaster, has three proPO genes (DoxA1, CG8193 and CG2952). DoxA1 has been shown to encode proPO A(1), one of the two proPO isoforms (A(1) and A(3)). However, which of CG8193 or CG2952 encodes proPO A(3) has so far remained elusive. In Northern analysis, CG8193 expression was strong during the larval stage, yet expression of CG2952 was not detected at any stage. Immunoblot analyses with specific antibodies detected CG8193 in the larval hemolymph at the mobility of the endogenous proPO A(3), though no signal for CG2952. These results indicate that the expression of CG2952 is very low and that CG8193 is the gene that encodes proPO A(3). Processing of A(1) and A(3) isoforms in adult homogenate and activity of recombinant proPOs were also investigated.
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