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 | 12 |
| 1978 | 3 |
| 1979 | 11 |
| 1980 | 8 |
| 1981 | 13 |
| 1982 | 22 |
| 1983 | 18 |
| 1984 | 17 |
| 1985 | 15 |
| 1986 | 14 |
| 1987 | 15 |
| 1988 | 32 |
| 1989 | 59 |
| 1990 | 90 |
| 1991 | 102 |
| 1992 | 98 |
| 1993 | 328 |
| 1994 | 737 |
| 1995 | 562 |
| 1996 | 659 |
| 1997 | 940 |
| 1998 | 1,252 |
| 1999 | 1,583 |
| 2000 | 1,722 |
| 2001 | 1,940 |
| 2002 | 2,145 |
| 2003 | 2,805 |
| 2004 | 3,461 |
| 2005 | 3,779 |
| 2006 | 4,264 |
| 2007 | 4,752 |
| 2008 | 4,754 |
| 2009 | 4,781 |
| 2010 | 4,962 |
| 2011 | 4,832 |
| 2012 | 5,243 |
| 2013 | 5,654 |
| 2014 | 6,890 |
| 2015 | 6,505 |
| 2016 | 7,400 |
| 2017 | 7,809 |
| 2018 | 8,101 |
| 2019 | 8,478 |
| 2020 | 10,178 |
| 2021 | 9,632 |
| 2022 | 11,182 |
| 2023 | 11,795 |
| 2024 | 12,378 |
| 2025 | 13,559 |
| 2026 | 8,777 |














