To explore the protein components for scallop byssus, the soluble fractions of scallop byssus was extract. For mass spectrometric analysis, proteins were extracted from byssal adhesive plaques, and the whole protein smple was treated with trypsin and analyzed using Thermo Fisher Q Exactive Mass Spectrometer (Thermo Fisher Scientific, USA). The mass spectrometry raw data were searched against the full set of predicted proteins from the C. farreri genome and Transcriptome using Mascot v2.3.0 (Matrix Science, London, UK).