Sericin Composition in the Silk of Antheraea yamamai
Jazyk angličtina Země Spojené státy americké Médium print-electronic
Typ dokumentu časopisecké články
- MeSH
- fylogeneze MeSH
- hedvábí chemie MeSH
- hmyzí proteiny chemie genetika metabolismus MeSH
- můry metabolismus MeSH
- sekvence aminokyselin MeSH
- sekvenční homologie aminokyselin MeSH
- sericiny chemie genetika metabolismus MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- hedvábí MeSH
- hmyzí proteiny MeSH
- sericiny MeSH
The silks produced by caterpillars consist of fibroin proteins that form two core filaments, and sericin proteins that seal filaments into a fiber and conglutinate fibers in the cocoon. Sericin genes are well-known in Bombyx mori (Bombycidae) but have received little attention in other insects. This paper shows that Antheraea yamamai (Saturniidae) contains five sericin genes very different from the three sericin genes of B. mori. In spite of differences, all known sericins are characterized by short exons 1 and 2 (out of 3-12 exons), expression in the middle silk gland section, presence of repeats with high contents of Ser and charged amino acid residues, and secretion as a sticky silk component soluble in hot water. The B. mori sericins represent tentative phylogenetic lineages (I) BmSer1 and orthologs in Saturniidae, (II) BmSer2, and (III) BmSer3 and related sericins of Saturniidae and of the pyralid Galleria mellonella. The lineage (IV) seems to be limited to Saturniidae. Concerted evolution of the sericin genes was apparently associated with gene amplifications as well as gene loses. Differences in the silk fiber morphology indicate that the cocktail of sericins linking the filaments and coating the fiber is modified during spinning. Silks are composite biomaterials of conserved function in spite of great diversity of their composition.
Entomological Institute Biology Centre ASCR Branišovská 31 370 05 České Budějovice Czech Republic
Institute of Molecular Genetics ASCR Vídeňská 1083 142 20 Praha 4 Czech Republic
National Institute of Agrobiological Sciences Tsukuba Ibaraki 305 8634 Japan
Citace poskytuje Crossref.org
Using the multi-omics approach to reveal the silk composition in Plectrocnemia conspersa
