title: Control of expression of silk protein genes.
abstract: At least three silk genes are specifically expressed in the posterior, and five other genes in middle, silk glands. The products of genes active in PSG include fibroin, L-chain fibroin and P25 protein. PSG genes as well as the Ser-1 gene, differing in structure, exhibit a striking degree of homology of their 5' flanking sequences. This suggests the presence of common regulatory mechanisms. The expression of silk protein genes is probably controlled by tissue-specific and general transcriptional factors. Hormones seem to participate in the regulation of expression of silk protein genes.
authors.affiliation: Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw.
authors.forename: K
authors.initials: K
authors.lastname: Grzelak
mesh_terms: D000818:Animals; D001483:Base Sequence; D012831:Bombyx / Q000235:genetics*; D004777:Environment; D005786:Gene Expression Regulation / Q000502:physiology*; D017344:Genes, Insect; D007301:Insect Hormones / Q000502:physiology*; D007915:Lepidoptera / Q000235:genetics*; D008969:Molecular Sequence Data; D011506:Proteins / Q000235:genetics*
chemical_list: D007301:Insect Hormones; D011506:Proteins