Table 1.

Numbers of all PDB-released structures (*) and residues in X-ray and cryo-EM structures (**) with high resolution (≤2.0 Å) over decades. In the first column, amino acids are abbreviated as AAs, and nucleotides as nts

	≤1980	1981–1990	1991–2000	2001–2010	2011–2022	Total	% of the total
Proteins (*)	78	634	12 121	43 205	108 677	164 715	91.57
AAs ≤2.0 Å (**)	5050	45 236	1 609 401	11 390 238	28 513 777	41 563 702	99.78
RNA (*)	2	23	306	1392	4488	6211	3.45
RNA nts ≤2.0 Å (**)	0	0	1270	5974	26 921	34 165	0.08
DNA (*)	1	91	1061	2009	5800	8962	4.98
DNA nts ≤2.0 Å	0	238	5430	15 730	38 107	59 505	0.14