1IEB

HISTOCOMPATIBILITY ANTIGEN

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	1997-06-05	Initial release
1.1	2008-03-03		Version format compliance
1.2	2011-07-13		Non-polymer description, Version format compliance		Download
2.0	2020-07-29	Remediation / Carbohydrate remediation	Advisory, Atomic model, Data collection, Derived calculations, Non-polymer description, Refinement description, Structure summary	atom_site, chem_comp, database_PDB_caveat, entity, pdbx_chem_comp_identifier, pdbx_entity_nonpoly, pdbx_nonpoly_scheme, pdbx_validate_chiral, software, struct_asym, struct_conn, struct_site, struct_site_gen
2.1	2023-08-09		Database references, Refinement description, Structure summary	chem_comp, database_2, pdbx_initial_refinement_model
2.2	2024-11-06		Data collection, Structure summary	chem_comp_atom, chem_comp_bond, pdbx_entry_details, pdbx_modification_feature	Download

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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 R01GM157729.