4MD2

Ground state of bacteriorhodopsin from Halobacterium salinarum

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	2014-10-08	Initial release
1.1	2015-06-10		Non-polymer description, Structure summary
1.2	2020-01-29		Advisory, Database references, Derived calculations	citation, citation_author, pdbx_struct_assembly, pdbx_struct_assembly_gen, pdbx_struct_assembly_prop, pdbx_unobs_or_zero_occ_atoms, struct_conn
1.3	2023-09-20		Advisory, Data collection, Database references, Derived calculations, Refinement description	chem_comp_atom, chem_comp_bond, database_2, pdbx_initial_refinement_model, pdbx_unobs_or_zero_occ_atoms, struct_site	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.