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 | 11 |
| 1977 | 15 |
| 1978 | 3 |
| 1979 | 5 |
| 1980 | 8 |
| 1981 | 10 |
| 1982 | 19 |
| 1983 | 17 |
| 1984 | 12 |
| 1985 | 14 |
| 1986 | 11 |
| 1987 | 14 |
| 1988 | 32 |
| 1989 | 48 |
| 1990 | 75 |
| 1991 | 87 |
| 1992 | 95 |
| 1993 | 306 |
| 1994 | 621 |
| 1995 | 508 |
| 1996 | 612 |
| 1997 | 867 |
| 1998 | 1,109 |
| 1999 | 1,390 |
| 2000 | 1,527 |
| 2001 | 1,702 |
| 2002 | 1,853 |
| 2003 | 2,514 |
| 2004 | 3,093 |
| 2005 | 3,383 |
| 2006 | 3,828 |
| 2007 | 4,286 |
| 2008 | 4,252 |
| 2009 | 4,277 |
| 2010 | 4,411 |
| 2011 | 4,362 |
| 2012 | 4,615 |
| 2013 | 4,916 |
| 2014 | 6,057 |
| 2015 | 5,724 |
| 2016 | 6,398 |
| 2017 | 6,783 |
| 2018 | 7,044 |
| 2019 | 7,332 |
| 2020 | 8,743 |
| 2021 | 8,104 |
| 2022 | 9,595 |
| 2023 | 10,006 |
| 2024 | 10,296 |
| 2025 | 11,050 |














