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 | 11 |
| 1977 | 13 |
| 1978 | 2 |
| 1979 | 7 |
| 1980 | 6 |
| 1981 | 10 |
| 1982 | 19 |
| 1983 | 17 |
| 1984 | 14 |
| 1985 | 17 |
| 1986 | 12 |
| 1987 | 19 |
| 1988 | 40 |
| 1989 | 57 |
| 1990 | 83 |
| 1991 | 106 |
| 1992 | 93 |
| 1993 | 364 |
| 1994 | 696 |
| 1995 | 591 |
| 1996 | 681 |
| 1997 | 933 |
| 1998 | 1,249 |
| 1999 | 1,540 |
| 2000 | 1,756 |
| 2001 | 1,909 |
| 2002 | 2,065 |
| 2003 | 2,763 |
| 2004 | 3,499 |
| 2005 | 3,742 |
| 2006 | 4,284 |
| 2007 | 4,774 |
| 2008 | 4,726 |
| 2009 | 4,753 |
| 2010 | 4,993 |
| 2011 | 4,867 |
| 2012 | 5,221 |
| 2013 | 5,612 |
| 2014 | 6,808 |
| 2015 | 6,515 |
| 2016 | 7,226 |
| 2017 | 7,760 |
| 2018 | 7,940 |
| 2019 | 8,439 |
| 2020 | 10,097 |
| 2021 | 9,477 |
| 2022 | 11,119 |
| 2023 | 11,686 |
| 2024 | 12,185 |
| 2025 | 13,097 |
| 2026 | 3,855 |














