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 | 12 |
| 1977 | 18 |
| 1978 | 3 |
| 1979 | 7 |
| 1980 | 6 |
| 1981 | 14 |
| 1982 | 18 |
| 1983 | 15 |
| 1984 | 11 |
| 1985 | 19 |
| 1986 | 11 |
| 1987 | 15 |
| 1988 | 38 |
| 1989 | 55 |
| 1990 | 87 |
| 1991 | 108 |
| 1992 | 90 |
| 1993 | 361 |
| 1994 | 713 |
| 1995 | 567 |
| 1996 | 687 |
| 1997 | 949 |
| 1998 | 1,225 |
| 1999 | 1,519 |
| 2000 | 1,719 |
| 2001 | 1,921 |
| 2002 | 2,064 |
| 2003 | 2,809 |
| 2004 | 3,525 |
| 2005 | 3,703 |
| 2006 | 4,226 |
| 2007 | 4,763 |
| 2008 | 4,738 |
| 2009 | 4,753 |
| 2010 | 5,026 |
| 2011 | 4,886 |
| 2012 | 5,234 |
| 2013 | 5,641 |
| 2014 | 6,749 |
| 2015 | 6,381 |
| 2016 | 7,274 |
| 2017 | 7,927 |
| 2018 | 7,927 |
| 2019 | 8,396 |
| 2020 | 10,060 |
| 2021 | 9,460 |
| 2022 | 11,047 |
| 2023 | 11,582 |
| 2024 | 12,072 |
| 2025 | 13,093 |
| 2026 | 4,137 |














