Isoelectric Focusing of the Hemolymph Proteins of the Silkworm, Bombyx mori
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Abstract
Soluble proteins of silkworm hemolymph were investigated by means of isoelectric focusing (IEF). The protein spectra during ontogenesis of races and interraces hybrids kept in Bulgaria was studied. A total of 51 protein bands in the hemolymph from fourth larval instar to imago were ascertained. Stage specific expression was established. The specific expression of some protein bands in the individual spectra manifest phenotype of gene determinate polymorphism (HP F, HP J, HP K, HP L, HP Q - in the zone with pH gradient 3.5 ~ 6.2 and HP K, HP L, HP N, HP P, HP T - in the zone with pH gradient 9.5 ~ 6.2). Breed specific expression was observed. On the basis of the obtained results, it was established that the investigated breeds are heterogeneous and the isoelectric focusing method is successful when specifying the inner-race and interrace polymorphism in silkworm.
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