4NC2

Crystal structure of TcdB-B1 bound to B39 VHH

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	2013-12-11	Initial release
1.1	2014-01-01		Database references
1.2	2014-02-12		Database references
1.3	2023-09-20		Data collection, Database references, Refinement description	chem_comp_atom, chem_comp_bond, database_2, pdbx_initial_refinement_model, struct_ref_seq_dif
1.4	2024-10-16		Structure summary	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.