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 | 10 |
| 1978 | 2 |
| 1979 | 6 |
| 1980 | 6 |
| 1981 | 10 |
| 1982 | 18 |
| 1983 | 17 |
| 1984 | 10 |
| 1985 | 17 |
| 1986 | 9 |
| 1987 | 12 |
| 1988 | 32 |
| 1989 | 52 |
| 1990 | 73 |
| 1991 | 82 |
| 1992 | 85 |
| 1993 | 296 |
| 1994 | 651 |
| 1995 | 504 |
| 1996 | 604 |
| 1997 | 849 |
| 1998 | 1,078 |
| 1999 | 1,375 |
| 2000 | 1,540 |
| 2001 | 1,722 |
| 2002 | 1,868 |
| 2003 | 2,469 |
| 2004 | 3,070 |
| 2005 | 3,356 |
| 2006 | 3,791 |
| 2007 | 4,245 |
| 2008 | 4,233 |
| 2009 | 4,245 |
| 2010 | 4,392 |
| 2011 | 4,266 |
| 2012 | 4,615 |
| 2013 | 4,888 |
| 2014 | 6,032 |
| 2015 | 5,696 |
| 2016 | 6,424 |
| 2017 | 6,825 |
| 2018 | 6,950 |
| 2019 | 7,339 |
| 2020 | 8,703 |
| 2021 | 8,152 |
| 2022 | 9,551 |
| 2023 | 10,079 |
| 2024 | 10,340 |
| 2025 | 10,322 |














