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 | 14 |
| 1977 | 14 |
| 1978 | 3 |
| 1979 | 8 |
| 1980 | 7 |
| 1981 | 13 |
| 1982 | 20 |
| 1983 | 20 |
| 1984 | 13 |
| 1985 | 16 |
| 1986 | 12 |
| 1987 | 15 |
| 1988 | 40 |
| 1989 | 49 |
| 1990 | 90 |
| 1991 | 96 |
| 1992 | 106 |
| 1993 | 338 |
| 1994 | 718 |
| 1995 | 567 |
| 1996 | 685 |
| 1997 | 979 |
| 1998 | 1,264 |
| 1999 | 1,563 |
| 2000 | 1,680 |
| 2001 | 1,906 |
| 2002 | 2,030 |
| 2003 | 2,764 |
| 2004 | 3,447 |
| 2005 | 3,657 |
| 2006 | 4,232 |
| 2007 | 4,692 |
| 2008 | 4,706 |
| 2009 | 4,744 |
| 2010 | 4,951 |
| 2011 | 4,836 |
| 2012 | 5,194 |
| 2013 | 5,592 |
| 2014 | 6,638 |
| 2015 | 6,371 |
| 2016 | 7,202 |
| 2017 | 7,749 |
| 2018 | 7,877 |
| 2019 | 8,278 |
| 2020 | 9,888 |
| 2021 | 9,348 |
| 2022 | 11,059 |
| 2023 | 11,625 |
| 2024 | 11,945 |
| 2025 | 12,953 |
| 2026 | 5,158 |














