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Table 2 Conformation changes of EPS proteins from R. faecalis RLD-53 at different concentration of L-cysteine

From: Photo-fermentative bacteria aggregation triggered by L-cysteine during hydrogen production

Secondary structures

Wavenumber (cm-1)

L-cysteine (g/l)

0.0

0.5

1.0

1.5

Aggregated strands (%)

1625-1610

1.55

1.21

2.51

2.01

β-Sheet (%)

1640-1630

11.33

14.73

21.09

25.31

Random coil (%)

1645-1640

37.50

27.30

3.28

5.52

α-Helix (%)

1657-1648

16.96

25.52

49.40

31.03

3-Turn helix (%)

1666-1659

20.13

27.63

21.35

34.54

Antiparallel β-sheet/ aggregated strands (%)

1680-1695

12.53

3.62

2.38

1.59