Linear and 2DUV signals of the β -sheets of various sizes. The sheet elements were obtained from lectin (PDB file 1les.pdb) as follows. 1les-b-S is made of two strands: Thr1-Phe11 of chain C, and Val37-Leu46 of chain D of lectin (PDB file 1les.pdb). 1les-b-M is made of four strands: Thr1-Phe11 of chain C, Val37-Leu46 of chain D, Val60-Val70 of chain C, and Glu158-Ala169 of chain C. 1les-b-L is made of six strands: Thr1-Phe11 of chain C, Val37-Leu46 of chain D, Val60-Val70 of chain C, Glu158-Ala169 of chain C, Val1-Pro11 of chain D, and Val37-Leu46 of chain D. From top to bottom: structures, and absorption, 2DUV xxxx, CD, and 2DUV xxxy spectra. The 2DUV spectra normalization (R) factors: for S xxxx – 0.35, xxxy – 0.34; M xxxx –0.37, xxxy – 0.32; L xxxx – 0.36, xxxy – 0.12.