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 | 10 |
| 1977 | 12 |
| 1978 | 2 |
| 1979 | 5 |
| 1980 | 6 |
| 1981 | 11 |
| 1982 | 15 |
| 1983 | 15 |
| 1984 | 13 |
| 1985 | 12 |
| 1986 | 13 |
| 1987 | 10 |
| 1988 | 30 |
| 1989 | 50 |
| 1990 | 67 |
| 1991 | 83 |
| 1992 | 79 |
| 1993 | 299 |
| 1994 | 643 |
| 1995 | 516 |
| 1996 | 600 |
| 1997 | 865 |
| 1998 | 1,097 |
| 1999 | 1,395 |
| 2000 | 1,533 |
| 2001 | 1,680 |
| 2002 | 1,914 |
| 2003 | 2,527 |
| 2004 | 3,114 |
| 2005 | 3,414 |
| 2006 | 3,819 |
| 2007 | 4,232 |
| 2008 | 4,243 |
| 2009 | 4,265 |
| 2010 | 4,461 |
| 2011 | 4,264 |
| 2012 | 4,600 |
| 2013 | 4,977 |
| 2014 | 6,021 |
| 2015 | 5,721 |
| 2016 | 6,374 |
| 2017 | 6,824 |
| 2018 | 6,936 |
| 2019 | 7,337 |
| 2020 | 8,811 |
| 2021 | 8,107 |
| 2022 | 9,590 |
| 2023 | 10,131 |
| 2024 | 10,358 |
| 2025 | 10,855 |














