Table 2.

Range of architectures according to CATH classification in cSP92. Column 1. CATH Architecture code, column 2. Architecture name (A), column 3. Number of particular folds represented in A.

CATH A code	A: Architecture name	T varieties in A
1.10	α Orthogonal Bundle	14
1.20	α Up–down Bundle	6
2.10	β Ribbon	1
2.130	β 7 Propeller	1
2.30	β Roll	2
2.40	β Barrel	9
2.60	β Sandwich	4
2.70	β Distorted Sandwich	2
2.80	β Trefoil	1
3.10	αβ Roll	5
3.20	αβ Alpha-Beta Barrel	1
3.30	αβ 2-Layer Sandwich	9
3.40	αβ 3-Layer(aba) Sandwich	10
3.50	αβ 3-Layer(bba) Sandwich	1
3.60	αβ 4-Layer Sandwich	2
3.90	αβ Complex	2
4.10	Irregular	6