Figure 3. Constantly accumulated proteins in the silk gland lumen.

Twelve proteins showed greatest increment from day 5 of the fifth instar to day 1 of wandering (Supplementary Table S1), which also constituted the twelve most abundant cocoon proteins (Zhang et al. 2015), including three fibroins, two sericins, one seroin, three protease inhibitors, and three proteins of unknown function. These proteins were compared according to their relative abundance (normalized iBAQ intensity) (Supplementary Dataset 2).