Proteomic Analysis of Royal Jelly from Three Strains of Western Honeybees (Apis mellifera)
2007
Li, J. | Wang, T. | Zhang, Z. | Pan, Y.
To compare the protein complement of royal jelly (RJ) from high RJ producing honeybees (Apis mellifera L.), a strain of A. mellifera artificially selected for increased RJ production from Italian honeybees in China for more than two decades was compared to those of native Italian honeybees (A. mellifera L.) and Carnica honeybees (A. mellifera C.); the protein in RJ from these three strains of honeybees was partially identified by using a combination of two-dimensional polyacrylamide gel electrophoresis (2D-PAGE), matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF/MS), and a protein engine identification tool applied to the honeybee genome. The results showed that 152, 157, and 137 proteins were detected in the three species of RJ; among which 57, 57, 51 high abundant proteins ere identified, respectively. Most identifited spots, 45, 45, 41, were assigned to major royal jelly proteins (MRJPs). Remarkable differences were found in the heterogeneity of the MRJPs, in particular, MRJP3. Also, 3-glucose oxidase, 1-peroxiredoxin (PRDX), and 1-glutathione S-transferase (GST) S1 were identified in three RJ samples. Furthermore, during the determination of the peptides mass fingerprinting (PMF) of each spot, for the first time, PRDX and GST S1 proteins have been identified in RJ. Thus, the results suggest that the protein complement of high RJ producing honeybees is not different compared to native Italian honeybees, while a difference remains between Carnica honeybees.
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