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Table 3 Properties of minor ampullate silk for cobweb and orb-web weaving species

From: Duplication and concerted evolution of MiSp-encoding genes underlie the material properties of minor ampullate silks of cobweb weaving spiders

Species Diameter (μm) Young’s Modulus (GPa) Strength (MPa) Extensibility (ln mm/mm) Toughness (J/cm3) GPG (%)
Latrodectus hesperus 1.12 ± 0.47 3.9 ± 2.9 245.4 ± 120.5 0.57 ± 0.02 66.7 ± 46.4 0.07 g
Latrodectus geometricus 1.09 ± 0.29 2.6 ± 1.3 174.4 ± 17.6 0.54 ± 0.02 43.6 ± 20.1 3.48 h
Steatoda grossa 1.07 ± 0.26 2.1 ± 0.7 251.3 ± 106.2 0.74 ± 0.02 57.3 ± 20.7 12.79 i
Nephila clavipes a 2.5 ± 0.2 3.0 ± 0.6 346 ± 53 0.30 ± 0.15   0 j
Nephila clavipes b 2.5   960 ± 50 0.25 ± 0.03   0 j
Nephila inaurata c 1.8 ± 0.1 11.2 ± 0.7 1500 ± 200 0.46 ± 0.05 300 ± 50  
Argiope trifasciata d,e 0.69 ± 0.10 8.9 ± 0.05 751.5 ± 40 0.44 ± 0.04 150 ± 12  
Argiope trifasciata c 1.8 ± 0.1 10 ± 0.4 1040 ± 6 0.45 ± 0.02 240 ± 20  
Argiope argentata e 1.1 ± 0.7 10.6 ± 1.2 923 ± 154 0.33 ± 0.03 137 ± 22  
Araneus diadematus f     0.29   0 k
Araneus gemmoides b 2.0   1400 ± 100 0.22 ± 0.07   
  1. Material properties collected from a[10], b[15], c[13], d[9], e[8], f[74]
  2. Proportion of MiSp that is made up of the motif GPG was averaged across sequences described for each species: g Lh MiSp_v1, MiSp_v2; h Lg MiSp_v1, MiSp_v2; i Sg MiSp: C-terminal encoding cDNA (KX584021); j AF027735; k U47853