PDB Statistics: UniProtKB Entries with Known 3D Structure (Annual)
This chart shows the total number of unique UniProtKB entries in PDB structures released within each year.
Note: The number of unique UniProtKB entries in the statistics table is linked to the group search result page. There is a default precision threshold in calculating the numbers for performance balance. So the statistics count may have a slight discrepancy compared to the actual non-redundant group search result when the result count approaches or goes above 10,000. The group search result page provides an accurate count. The statistics page provides the trend.
| Year | UniProtKB Entries with Known 3D Structure |
|---|---|
| 1976 | 13 |
| 1977 | 11 |
| 1978 | 2 |
| 1979 | 6 |
| 1980 | 6 |
| 1981 | 11 |
| 1982 | 22 |
| 1983 | 19 |
| 1984 | 12 |
| 1985 | 18 |
| 1986 | 14 |
| 1987 | 13 |
| 1988 | 31 |
| 1989 | 52 |
| 1990 | 89 |
| 1991 | 99 |
| 1992 | 106 |
| 1993 | 309 |
| 1994 | 715 |
| 1995 | 574 |
| 1996 | 639 |
| 1997 | 928 |
| 1998 | 1,231 |
| 1999 | 1,567 |
| 2000 | 1,702 |
| 2001 | 1,945 |
| 2002 | 2,146 |
| 2003 | 2,808 |
| 2004 | 3,468 |
| 2005 | 3,796 |
| 2006 | 4,269 |
| 2007 | 4,764 |
| 2008 | 4,828 |
| 2009 | 4,789 |
| 2010 | 4,963 |
| 2011 | 4,832 |
| 2012 | 5,270 |
| 2013 | 5,681 |
| 2014 | 6,807 |
| 2015 | 6,429 |
| 2016 | 7,334 |
| 2017 | 7,861 |
| 2018 | 8,066 |
| 2019 | 8,511 |
| 2020 | 10,156 |
| 2021 | 9,603 |
| 2022 | 11,199 |
| 2023 | 11,877 |
| 2024 | 12,457 |
| 2025 | 13,569 |
| 2026 | 9,042 |














