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. 2019 Oct 22;4(19):18049–18060. doi: 10.1021/acsomega.9b01885

Table 1. Normalized Contributions of Different Secondary Structural Elements As Determined by the Analysis of Amide (I and III) Regionsa.

amide I (components) turn (%) β-strand (%) random (%)
pH 3
1695     27
1682 41    
1664   22  
1644 10    
pH 7
1690     32
1675 24    
1660   20  
1643 24    
amide III (components) turn (%) β-strand (%) random (%)
pH 3
1297 15    
1281 19    
1267     25
1253 20    
1235   21  
pH 7
1296 11    
1283 28    
1267     30
1250 17    
1234   14  
total turn (%) β-strand (%) random (%)
amide I (pH 3) 51 22 27
amide III (pH 3) 54 21 25
amide I (pH 7) 48 20 32
amide III (pH 7) 56 14 30
accuracy ±5%      
a

The components are referred to by their maximum wavenumber expressed in cm–1. See Figure 4 for band decomposition of amide (I and III) regions.