Table 3 Assignments of partial IR and Raman bands of protein secondary structures [55,56,57,58]

From: Biofouling and biomineralization of tubular concretions attached to Longquan celadon from Shengbeiyu shipwreck, China (14th Century CE): a multi-analytical case study

Secondary structures of proteins

Wavenumber of IR Amide I/cm−1

Wavenumber of IR Amide III/cm−1

Wavenumber of Raman Amide III/cm−1

α-helix

1646–1661

1295–1330

1260–1340

β-turn

1615–1637

1220–1250

1270–1310

β-sheet

1665, 1670, 1675, 1683, 1688, 1694

1270–1295

1220–1265

Random coil

1637–1648

1250–1270

1230–1260