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 | 8 |
| 1977 | 12 |
| 1978 | 3 |
| 1979 | 6 |
| 1980 | 6 |
| 1981 | 11 |
| 1982 | 18 |
| 1983 | 16 |
| 1984 | 12 |
| 1985 | 15 |
| 1986 | 12 |
| 1987 | 12 |
| 1988 | 35 |
| 1989 | 48 |
| 1990 | 79 |
| 1991 | 92 |
| 1992 | 89 |
| 1993 | 318 |
| 1994 | 611 |
| 1995 | 510 |
| 1996 | 618 |
| 1997 | 857 |
| 1998 | 1,099 |
| 1999 | 1,398 |
| 2000 | 1,562 |
| 2001 | 1,726 |
| 2002 | 1,878 |
| 2003 | 2,464 |
| 2004 | 3,109 |
| 2005 | 3,385 |
| 2006 | 3,836 |
| 2007 | 4,320 |
| 2008 | 4,260 |
| 2009 | 4,347 |
| 2010 | 4,470 |
| 2011 | 4,404 |
| 2012 | 4,634 |
| 2013 | 4,996 |
| 2014 | 6,080 |
| 2015 | 5,709 |
| 2016 | 6,474 |
| 2017 | 6,832 |
| 2018 | 6,978 |
| 2019 | 7,292 |
| 2020 | 8,800 |
| 2021 | 8,242 |
| 2022 | 9,718 |
| 2023 | 10,157 |
| 2024 | 10,481 |
| 2025 | 11,450 |
| 2026 | 2,321 |














