New insights into the proteins interacting with the promoters of silkworm fibroin genes
| Autor: | Yao Ou, Yiyun Tang, Qin Luo, Yan Ma, Wenhui Zeng, Haomiao Wang, Jie Hu, Hanfu Xu |
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| Rok vydání: | 2021 |
| Předmět: |
Molecular biology
Science Silk Fibroin Ribosome Sericin Article Bombyx mori Protein Interaction Mapping Protein biosynthesis Animals Protein Interaction Domains and Motifs Sericins Promoter Regions Genetic Transcription factor Multidisciplinary biology Chemistry fungi Promoter Bombyx biology.organism_classification Cell biology Larva Insect Proteins Medicine Protein folding Fibroins Zoology Protein Binding Transcription Factors |
| Zdroj: | Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021) Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | The silkworm, Bombyx mori, is a silk-producing insect that has contributed greatly to human society. The silk gland of B. mori is a specialized organ responsible for synthesizing silk fibroin and sericin proteins under control of numerous factors. However, which factors are involved in direct silk protein synthesis regulation remains largely unknown. We report the identification of promoter-interacting proteins (PIPs) necessary for the regulation of genes encoding fibroin proteins, including the fibroin heavy chain (fibH), fibroin light chain (fibL), and a 25-kD polypeptide protein (P25). In the fourth larval molting stage (M4) or day 5 fifth-instar larvae (L5D5), a total of 198, 292, and 247 or 330, 305, and 460 proteins interacting with the promoter region of fibH, fibL and P25, respectively, were identified from the posterior silk gland by DNA pull-down combined with mass spectrometry. Many PIPs were particularly involved in ribosome- and metabolism-related pathways. Additionally, 135 and 212 proteins were identified as common PIPs of fibH, fibL and P25 in M4 and L5D5, respectively. Among all PIPs, we identified 31 potential transcription factors, such as Y-box and poly A-binding proteins, which play roles in nucleotide binding, ATP binding, or protein folding. This study provides the first in-depth profile of proteins interacting with fibroin gene promoters and contributes to a better understanding of silk protein synthesis regulation. |
| Databáze: | OpenAIRE |
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