Soluble and particle-bound trehalase in the silk glands during larval-pupal development of the silkworm, Bombyx mori.
Trehalase localization in silk glands of the silkworm, Bombyx mori has been studied during larval-pupal development. Subcellular distribution of the silk gland trehalase depends upon larval-pupal development. The activity increases in the soluble fraction with a concomitant decrease in the particle-bound fraction during larval-pupal development. The pH-optimum value of trehalase activity in the particle-bound fraction changes from 6.5 to 6.0, and in the soluble fraction from 5.5 to 4.5 in the course of the silk gland degeneration during metamorphosis.
D000818:Animals; D012831:Bombyx / Q000201:enzymology* / Q000254:growth & development; D005088:Exocrine Glands / Q000201:enzymology; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D007814:Larva / Q000201:enzymology; D011679:Pupa / Q000201:enzymology; D014198:Trehalase / Q000378:metabolism*
D014198:Trehalase