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 | 14 |
| 1978 | 3 |
| 1979 | 7 |
| 1980 | 7 |
| 1981 | 13 |
| 1982 | 21 |
| 1983 | 13 |
| 1984 | 13 |
| 1985 | 19 |
| 1986 | 12 |
| 1987 | 19 |
| 1988 | 40 |
| 1989 | 52 |
| 1990 | 92 |
| 1991 | 109 |
| 1992 | 103 |
| 1993 | 368 |
| 1994 | 732 |
| 1995 | 586 |
| 1996 | 673 |
| 1997 | 952 |
| 1998 | 1,251 |
| 1999 | 1,526 |
| 2000 | 1,719 |
| 2001 | 1,882 |
| 2002 | 2,091 |
| 2003 | 2,790 |
| 2004 | 3,425 |
| 2005 | 3,728 |
| 2006 | 4,237 |
| 2007 | 4,759 |
| 2008 | 4,780 |
| 2009 | 4,798 |
| 2010 | 4,957 |
| 2011 | 4,826 |
| 2012 | 5,174 |
| 2013 | 5,627 |
| 2014 | 6,748 |
| 2015 | 6,407 |
| 2016 | 7,268 |
| 2017 | 7,748 |
| 2018 | 7,900 |
| 2019 | 8,376 |
| 2020 | 10,001 |
| 2021 | 9,365 |
| 2022 | 10,984 |
| 2023 | 11,603 |
| 2024 | 11,971 |
| 2025 | 13,161 |
| 2026 | 5,675 |














