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. 2022 Mar 1;2022:baac005. doi: 10.1093/database/baac005

Table 4.

Number of substructures recorded in DSDBASE previous version

Full database Non‐redundant_30 (nr_30) database Native of nr_30 database
No. of proteins 19 612 2849 766
No. of SS bonds 2 385 617 149 892 2170
Grade A 307 003 (12%) 19 591 (13%) 1321 (61%)
Grade B 633 431 (26%) 39 804 (27%) 341 (16%)
Grade C 728 374 (30%) 90 497 (60%) 508 (23%)
Grade Da 716 809 (29%)
a

Cα–Cα and Cβ–Cβ distances were compatible but sulphur could not be fixed geometrically.