4ECA

ASPARAGINASE FROM E. COLI, MUTANT T89V WITH COVALENTLY BOUND ASPARTATE

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	1997-06-16	Initial release
1.1	2008-03-25		Version format compliance
1.2	2011-07-13		Source and taxonomy, Version format compliance		Download
2.0	2018-10-03		Atomic model, Data collection, Non-polymer description, Structure summary	atom_site, chem_comp, entity, pdbx_validate_chiral
2.1	2021-11-03		Database references, Derived calculations	database_2, struct_conn, struct_ref_seq_dif
2.2	2023-08-09		Refinement description	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 R01GM133198.