1IEA

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
1.3	2017-03-22		Other
1.4	2020-07-29	Remediation / Carbohydrate remediation	Data collection, Derived calculations, Refinement description, Structure summary	chem_comp, entity, pdbx_chem_comp_identifier, pdbx_entity_nonpoly, software, struct_conn, struct_site, struct_site_gen
1.5	2023-08-09		Database references, Refinement description, Structure summary	chem_comp, database_2, pdbx_initial_refinement_model	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.