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 | 11 |
| 1978 | 2 |
| 1979 | 5 |
| 1980 | 7 |
| 1981 | 12 |
| 1982 | 19 |
| 1983 | 15 |
| 1984 | 16 |
| 1985 | 19 |
| 1986 | 11 |
| 1987 | 19 |
| 1988 | 40 |
| 1989 | 55 |
| 1990 | 84 |
| 1991 | 113 |
| 1992 | 94 |
| 1993 | 357 |
| 1994 | 714 |
| 1995 | 563 |
| 1996 | 671 |
| 1997 | 941 |
| 1998 | 1,224 |
| 1999 | 1,572 |
| 2000 | 1,706 |
| 2001 | 1,875 |
| 2002 | 2,091 |
| 2003 | 2,802 |
| 2004 | 3,442 |
| 2005 | 3,769 |
| 2006 | 4,275 |
| 2007 | 4,726 |
| 2008 | 4,725 |
| 2009 | 4,782 |
| 2010 | 4,923 |
| 2011 | 4,845 |
| 2012 | 5,243 |
| 2013 | 5,621 |
| 2014 | 6,654 |
| 2015 | 6,356 |
| 2016 | 7,231 |
| 2017 | 7,704 |
| 2018 | 7,933 |
| 2019 | 8,387 |
| 2020 | 9,928 |
| 2021 | 9,349 |
| 2022 | 10,982 |
| 2023 | 11,535 |
| 2024 | 11,954 |
| 2025 | 13,059 |
| 2026 | 3,226 |














