Bacteria-induced haemolymph proteins of Manduca sexta pupae and larvae |
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Authors: | Jeff A Hughes Ronald E Hurlbert Richard A Rupp Kemet D Spence |
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Institution: | Department of Bacteriology and Public Health, Washington State University, Pullman, Washington 99164-4340, U.S.A. |
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Abstract: | The haemolymph of Manduca sexta larvae and pupae has been analyzed for proteins potentially associated with the bacterial defence response of the insect. Five proteins, M13, M18, M20, M23, and M24 in pupae, and M4, M11, M13, M18 and M23 in larvae, are induced by the injection of bacteria into the haemolymph. Proteins M4 and M11 are always present at high levels in uninjected pupae. Proteins M20 and M24 could not be induced in larvae. These proteins, as well as those not showing a response to bacterial challenge or injury, were also analyzed for presence of disulphide bonds and carbohydrate moieties, and their apparent molecular weights determined. |
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Keywords: | insect immunity haemolymph proteins |
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