1PYW

Human class II MHC protein HLA-DR1 bound to a designed peptide related to influenza virus hemagglutinin, FVKQNA(MAA)AL, in complex with staphylococcal enterotoxin C3 variant 3B2 (SEC3-3B2)

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	2003-12-09	Initial release
1.1	2008-04-29		Version format compliance
1.2	2011-07-13		Non-polymer description, Version format compliance
1.3	2017-10-11		Advisory, Refinement description	pdbx_unobs_or_zero_occ_residues, software
1.4	2018-04-04		Data collection	diffrn_source
1.5	2021-10-27		Advisory, Database references, Derived calculations	database_2, pdbx_unobs_or_zero_occ_residues, struct_conn, struct_ref_seq_dif
1.6	2023-08-16		Data collection, Refinement description	chem_comp_atom, chem_comp_bond, 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.