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Keywords:

  • Animal proteomics;
  • Anterior silk gland;
  • Cuticle proteins;
  • Shotgun;
  • Silk fiber;
  • Spinning

The Bombyx mori anterior silk gland (ASG) is a natural fiber manipulator for the material provided by the middle and posterior silk glands. In view of the significant role of the ASG in the liquid–crystal spinning process, a shotgun proteomics approach was taken to study the relationship between the function of proteins in the silkworm ASG and the spinning mechanism. A total of 1132 proteins with 7647 unique peptides were identified in the ASG dataset including some involved in the cuticle, ion transportation, energy metabolism, and apoptosis. Two putative cuticle-specific proteins were highly and specifically expressed in the ASG; therefore, the ASG dataset could provide clues for comprehensive understanding of the natural silk spinning mechanism in the silkworm. All MS data have been deposited in the ProteomeXchange with identifier PXD000090.