LAUSR

Mussel byssus represents a fascinating class of biological materials with a unique capacity to adhere onto virtually any solid surface. Proteins expressed in byssus, the byssal‐producing organ (foot) as well as mantle tissue from Mytilus edulis or Mytilus californianus are analyzed by liquid chromatography tandem mass spectrometry (LC‐MS/MS). The mantle is used as a control tissue to pinpoint unique proteins from the foot samples potentially involved in byssogenesis. This work represents an important step towards identifying biologically important proteins expressed in foot, as well as extending knowledge on the byssus proteome. Considering the minimal proteomics data of the studied species, this data also contributes to a more complete description of M. edulis and M. californianus proteomes.