Full-Length Minor Ampullate Spidroin Gene Sequence
| Autor: | Senzhu Lin, Yunlong Zhang, Qing Meng, Gefei Chen, Xiang-Qin Liu, Jan Johansson, Zijiang Yang, Anna Rising |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Evolutionary Genetics
Gene Identification and Analysis Gene Expression Biochemistry Gene Duplication Naturvetenskap Spider silk Peptide sequence Genetics Multidisciplinary Spidroin Spiders Agriculture Genomics Fibers Medicine Structural Proteins Gene Classes Natural Sciences Research Article Protein Structure Science Molecular Sequence Data Silk Crops Sequence alignment Biology Molecular Genetics Genome Analysis Tools Complementary DNA Animals Amino Acid Sequence Gene Prediction Gene Repetitive Sequences Nucleic Acid Evolutionary Biology Base Sequence Sequence Homology Amino Acid Intron Proteins Computational Biology Sequence Analysis DNA Protein superfamily Introns Gene Function Fibroins Sequence Alignment |
| Zdroj: | PLoS ONE PLoS ONE, Vol 7, Iss 12, p e52293 (2012) |
| ISSN: | 1932-6203 |
| DOI: | 10.1371/journal.pone.0052293 |
| Popis: | Spider silk includes seven protein based fibers and glue-like substances produced by glands in the spider's abdomen. Minor ampullate silk is used to make the auxiliary spiral of the orb-web and also for wrapping prey, has a high tensile strength and does not supercontract in water. So far, only partial cDNA sequences have been obtained for minor ampullate spidroins (MiSps). Here we describe the first MiSp full-length gene sequence from the spider species Araneus ventricosus, using a multidimensional PCR approach. Comparative analysis of the sequence reveals regulatory elements, as well as unique spidroin gene and protein architecture including the presence of an unusually large intron. The spliced full-length transcript of MiSp gene is 5440 bp in size and encodes 1766 amino acid residues organized into conserved nonrepetitive N- and C-terminal domains and a central predominantly repetitive region composed of four units that are iterated in a non regular manner. The repeats are more conserved within A. ventricosus MiSp than compared to repeats from homologous proteins, and are interrupted by two nonrepetitive spacer regions, which have 100% identity even at the nucleotide level. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|