1S2N

Crystal structure of a cold adapted subtilisin-like serine proteinase

Changes made to a PDB entry after its initial release are considered to be either “major” or “minor”. The latest minor version of each major version is available as a file download. More information about the PDB versioning is available.

Version Number	Version Date	Version Type/Reason	Version Change	Revised CIF Category
1.0	2005-02-22	Initial release
1.1	2008-04-29		Version format compliance
1.2	2011-07-13		Advisory, Version format compliance
1.3	2011-09-21		Derived calculations
1.4	2016-12-21		Structure summary
1.5	2023-08-23		Data collection, Database references, Derived calculations, Refinement description	chem_comp_atom, chem_comp_bond, database_2, pdbx_initial_refinement_model, pdbx_struct_conn_angle, struct_conn, struct_conn_type, struct_ncs_dom_lim, struct_site	Download

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.