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 | 10 |
| 1977 | 11 |
| 1978 | 2 |
| 1979 | 8 |
| 1980 | 7 |
| 1981 | 11 |
| 1982 | 18 |
| 1983 | 18 |
| 1984 | 12 |
| 1985 | 12 |
| 1986 | 9 |
| 1987 | 13 |
| 1988 | 29 |
| 1989 | 50 |
| 1990 | 75 |
| 1991 | 91 |
| 1992 | 91 |
| 1993 | 316 |
| 1994 | 643 |
| 1995 | 507 |
| 1996 | 613 |
| 1997 | 855 |
| 1998 | 1,101 |
| 1999 | 1,389 |
| 2000 | 1,545 |
| 2001 | 1,698 |
| 2002 | 1,837 |
| 2003 | 2,471 |
| 2004 | 3,112 |
| 2005 | 3,355 |
| 2006 | 3,804 |
| 2007 | 4,218 |
| 2008 | 4,275 |
| 2009 | 4,221 |
| 2010 | 4,423 |
| 2011 | 4,277 |
| 2012 | 4,613 |
| 2013 | 4,969 |
| 2014 | 6,044 |
| 2015 | 5,731 |
| 2016 | 6,345 |
| 2017 | 6,872 |
| 2018 | 6,982 |
| 2019 | 7,364 |
| 2020 | 8,823 |
| 2021 | 8,105 |
| 2022 | 9,596 |
| 2023 | 10,036 |
| 2024 | 10,444 |
| 2025 | 9,575 |














