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Table 3 Enzyme structure: percentage distribution of secondary structural elements and sum of α-helix and β-sheet fractions in pristine GOx, sonicated GOx (5 min and 60 min) and various GOx-SWNT-X-L conjugates

From: Supramolecular glucose oxidase-SWNT conjugates formed by ultrasonication: effect of tube length, functionalization and processing time

  α-Helix β-Sheet Sum Turn Random Coil
Pristine GOx 16 31 47 13 40
Sonicated GOx – 5 min 37 26 63 15 22
Sonicated GOx – 60 min 37 25 62 12 26
GOx-Bucky – 60 min 45 18 63 12 24
GOx-SWNT-OH-long-5 min 36 20 56 10 34
GOx-SWNT-OH-long-60 min 48 17 65 9 27
GOx-SWNT-OH-medium-5 min 47 17 64 16 20
GOx-SWNT-OH-medium-60 min 42 18 60 18 22
GOx-SWNT-COOH-medium-5 min 50 15 65 18 17
GOx-SWNT-COOH-medium-60 min 37 23 60 16 24