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 | 12 |
| 1978 | 3 |
| 1979 | 6 |
| 1980 | 6 |
| 1981 | 9 |
| 1982 | 17 |
| 1983 | 14 |
| 1984 | 14 |
| 1985 | 17 |
| 1986 | 12 |
| 1987 | 14 |
| 1988 | 37 |
| 1989 | 54 |
| 1990 | 81 |
| 1991 | 92 |
| 1992 | 96 |
| 1993 | 322 |
| 1994 | 647 |
| 1995 | 511 |
| 1996 | 628 |
| 1997 | 852 |
| 1998 | 1,132 |
| 1999 | 1,365 |
| 2000 | 1,529 |
| 2001 | 1,709 |
| 2002 | 1,836 |
| 2003 | 2,511 |
| 2004 | 3,109 |
| 2005 | 3,398 |
| 2006 | 3,844 |
| 2007 | 4,275 |
| 2008 | 4,260 |
| 2009 | 4,257 |
| 2010 | 4,430 |
| 2011 | 4,289 |
| 2012 | 4,591 |
| 2013 | 4,936 |
| 2014 | 6,004 |
| 2015 | 5,658 |
| 2016 | 6,412 |
| 2017 | 6,808 |
| 2018 | 6,918 |
| 2019 | 7,260 |
| 2020 | 8,782 |
| 2021 | 8,126 |
| 2022 | 9,675 |
| 2023 | 10,099 |
| 2024 | 10,374 |
| 2025 | 10,023 |














