Abstract
ABSTRACTIn the present study, protein complexes emerged in high molecular weight (MW) region (95–170 kDa) were observed in fertilised chicken egg white after 7 days of incubation. Investigations were performed to reveal the possible proteins involved in these complexes. The emerged 10 protein bands from SDS-PAGE gel were confirmed to be ovalbumin through matrix-assisted laser desorption/ionisation time-of-flight tandem mass spectrometry (MALDI-TOF MS/MS) followed by Western blot analysis. To reveal the possible interactions among ovalbumin and other egg white proteins, LC connected to LTQ-Orbitrap mass spectrometer was used. Besides ovalbumin, 11 egg white proteins were identified including ovotransferrin, lysozyme, ovalbumin-related protein X, ovalbumin-related protein Y, hep21, alpha-enolase, ovoinhibitor, and a protein similar to ryanodine receptor 1. These results indicated widespread thermal-induced protein interactions among ovalbumin and other egg white proteins.
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