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 | 13 |
| 1978 | 2 |
| 1979 | 4 |
| 1980 | 7 |
| 1981 | 9 |
| 1982 | 16 |
| 1983 | 15 |
| 1984 | 11 |
| 1985 | 13 |
| 1986 | 10 |
| 1987 | 10 |
| 1988 | 35 |
| 1989 | 52 |
| 1990 | 76 |
| 1991 | 83 |
| 1992 | 81 |
| 1993 | 292 |
| 1994 | 642 |
| 1995 | 505 |
| 1996 | 603 |
| 1997 | 859 |
| 1998 | 1,081 |
| 1999 | 1,404 |
| 2000 | 1,515 |
| 2001 | 1,692 |
| 2002 | 1,871 |
| 2003 | 2,499 |
| 2004 | 3,131 |
| 2005 | 3,394 |
| 2006 | 3,817 |
| 2007 | 4,204 |
| 2008 | 4,215 |
| 2009 | 4,263 |
| 2010 | 4,395 |
| 2011 | 4,302 |
| 2012 | 4,612 |
| 2013 | 4,933 |
| 2014 | 6,021 |
| 2015 | 5,720 |
| 2016 | 6,374 |
| 2017 | 6,822 |
| 2018 | 6,980 |
| 2019 | 7,357 |
| 2020 | 8,741 |
| 2021 | 8,153 |
| 2022 | 9,545 |
| 2023 | 10,072 |
| 2024 | 10,496 |
| 2025 | 10,817 |














