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 | 9 |
| 1977 | 15 |
| 1978 | 2 |
| 1979 | 6 |
| 1980 | 6 |
| 1981 | 12 |
| 1982 | 19 |
| 1983 | 18 |
| 1984 | 11 |
| 1985 | 16 |
| 1986 | 12 |
| 1987 | 17 |
| 1988 | 34 |
| 1989 | 55 |
| 1990 | 75 |
| 1991 | 91 |
| 1992 | 88 |
| 1993 | 307 |
| 1994 | 633 |
| 1995 | 504 |
| 1996 | 623 |
| 1997 | 868 |
| 1998 | 1,098 |
| 1999 | 1,378 |
| 2000 | 1,503 |
| 2001 | 1,732 |
| 2002 | 1,883 |
| 2003 | 2,479 |
| 2004 | 3,083 |
| 2005 | 3,403 |
| 2006 | 3,797 |
| 2007 | 4,234 |
| 2008 | 4,279 |
| 2009 | 4,258 |
| 2010 | 4,432 |
| 2011 | 4,358 |
| 2012 | 4,654 |
| 2013 | 4,984 |
| 2014 | 5,994 |
| 2015 | 5,685 |
| 2016 | 6,454 |
| 2017 | 6,915 |
| 2018 | 6,960 |
| 2019 | 7,396 |
| 2020 | 8,805 |
| 2021 | 8,161 |
| 2022 | 9,678 |
| 2023 | 10,188 |
| 2024 | 10,491 |
| 2025 | 11,440 |
| 2026 | 2,496 |














