Spider Silk
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Esculent coating of spider silk enhanced the preservation and shelf life of apricot
Resumo Segundo a Organização para Alimentação e Agricultura (FAO), cerca de um terço do total de alimentos produzidos é perdido globalmente. A principal causa deste desperdício é a perecibilidade das frutas e legumes. Portanto, os pesquisadores têm se esforçado para desenvolver uma técnica de preservação eficaz. Nosso estudo explorou a potencial
Braz. J. Biol.. Publicado em: 04/07/2019
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2. Reproductive aspects of the Purple-throated Euphonia, Euphonia chlorotica (Aves: Fringillidae) in southeastern Brazil, and first record of the species nesting inside a vespiary
ABSTRACT Despite the fact that E. chlorotica (Linnaeus, 1766) is common and widely distributed in South America, the reproductive aspects of the species are poorly documented. Here we present data on 18 active nests found from August to February, between 2007 and 2012. Nests were globular with a lateral entrance, and measured 97.9 ± 14.4 mm in outside heigh
Zoologia (Curitiba). Publicado em: 23/10/2017
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3. Piriform spider silk sequences reveal unique repetitive elements.
Orb-weaving spider silk fibers are assembled from very large, highly repetitive proteins. The repeated segments contain, in turn, short, simple, and repetitive amino acid motifs that account for the physical and mechanical properties of the assembled fiber. Of the six orb-weaver silk fibroins, the piriform silk that makes the attachment discs, which lashes t
Biomacromolecules. Publicado em: 2011
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4. Expressão e purificação da proteína MaSp 2 isolada da glândula produtora de teia da aranha parawixia bistriata
Spider silks are constituted essentially of proteins, secreted by specialized glands found in different groups of arthropods. All spider species can produce silks, biopolymers synthesized by abdominal glands and polymerized through a series of spinnerets. Spiders may present seven different types of glands, each producing different fibers. These differences
Publicado em: 2008
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5. Expressão e purificação de proteínas de glândulas produtoras de seda das aranhas Nephilengys cruentata e Avicularia juruensis
Sedas são compostos protéicos secretadas por glândulas especializadas encontradas em diferentes grupos de artrópodes. Aranhas produzem uma diversidade de fibras, que são predominantemente compostas por proteínas repetitivas (espidroínas), codificadas por uma família multigênica. A caracterização dessa família está focada em espidroínas sintetiz
Publicado em: 2008
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6. Tenacidade e investimento em seda em aranhas de teia orbicular / Tenacity and silk investment in orb web spiders
The origin of the most diverse branch of orbweavers, the Araneoidea, coincides with the origin of the viscid silk in the group Orbiculariae. Many hypotheses were proposed to explain the increased diversity in Araneoidea, however none of them explain this phenomena completely. The present work investigates a new hypothesis: the disappearance of the cribellate
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/04/2007
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7. Aspectos da ecologia e socialidade de uma aranha colonial, Eriophora bistriata (Renger, 1936) (Araneidae)
Eriophora bistriata (Araneidae) is a pre-social spider, common in Brazilian cerrado. The spiders have individual orb-webs but cooperate in capture large prey. The spiders built the individual orbs daily, under a common suport silk line that is permanent and very resistant. The orbs are linked to each other by secondary support lines, forming the capture web.
Publicado em: 1987
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8. Spider silks: recombinant synthesis, assembly, spinning, and engineering of synthetic proteins
Since thousands of years humans have utilized insect silks for their own benefit and comfort. The most famous example is the use of reeled silkworm silk from Bombyx mori to produce textiles. In contrast, despite the more promising properties of their silk, spiders have not been domesticated for large-scale or even industrial applications, since farming the s
BioMed Central.
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9. Segmented nanofibers of spider dragline silk: Atomic force microscopy and single-molecule force spectroscopy
Despite its remarkable materials properties, the structure of spider dragline silk has remained unsolved. Results from two probe microscopy techniques provide new insights into the structure of spider dragline silk. A soluble synthetic protein from dragline silk spontaneously forms nanofibers, as observed by atomic force microscopy. These nanofibers have a s
The National Academy of Sciences.
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10. The effect of spinning conditions on the mechanics of a spider's dragline silk.
We studied the mechanical properties of dragline threads of the edible golden silk spider Nephila edulis that are produced under spinning speeds ranging from 0.1 to 400 mm s(-1) and temperatures ranging from 5 to 40 degrees C. These conditions affected the silk in all of the mechanical traits we tested (strain at breaking, breaking energy, initial Young's mo
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11. Modular evolution of egg case silk genes across orb-weaving spider superfamilies
Spider silk proteins (fibroins) are renowned for their extraordinary mechanical properties and biomimetic potential. Despite extensive evolutionary, ecological, and industrial interest in these fibroins, only a fraction of the known silk types have been characterized at the molecular level. Here we report cDNA and genomic sequences of the fibroin TuSp1, whic
National Academy of Sciences.
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12. 13C NMR of Nephila clavipes major ampullate silk gland.
The major ampullate glands of the spider Nephila clavipes contain approximately 0.2 microliter each of a highly concentrated (approximately 50%) solution of silk fibroin. Therefore, the reservoir of silk in these glands presents an ideal opportunity to observe prefolded conformations of a protein in its native state. To this end, the structure and conformati