2C4H

Torpedo californica acetylcholinesterase in complex with 500mM acetylthiocholine

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	2006-06-14	Initial release
1.1	2011-05-07		Version format compliance
1.2	2011-07-13		Version format compliance		Download
2.0	2018-07-18		Advisory, Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Structure summary	atom_site, chem_comp, citation, database_PDB_caveat, entity, pdbx_entity_nonpoly, pdbx_nonpoly_scheme, pdbx_validate_chiral, struct_asym, struct_conn
2.1	2019-04-03		Data collection, Derived calculations, Experimental preparation	exptl_crystal_grow, struct_conn
2.2	2020-07-29	Remediation / Carbohydrate remediation	Data collection, Derived calculations, Other, Structure summary	chem_comp, entity, pdbx_chem_comp_identifier, pdbx_database_status, pdbx_entity_nonpoly, struct_conn, struct_site, struct_site_gen
2.3	2023-12-13		Data collection, Database references, Refinement description, Structure summary	chem_comp, chem_comp_atom, chem_comp_bond, 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.