1Q4N
Structural studies of Phe256Trp of human salivary alpha-amylase: implications for the role of a conserved water molecule and its associated chain in enzyme activity
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 | 2004-03-16 | Initial release | |||
| 1.1 | 2008-04-29 | Version format compliance | |||
| 1.2 | 2011-07-13 | Version format compliance | |||
| 1.3 | 2018-01-31 | Experimental preparation | exptl_crystal_grow | Download | |
| 2.0 | 2019-12-25 | Database references, Derived calculations, Polymer sequence | entity_poly, pdbx_struct_mod_residue, struct_conn, struct_ref_seq_dif | ||
| 2.1 | 2021-10-27 | Database references, Derived calculations | database_2, pdbx_struct_conn_angle, struct_conn, struct_ref_seq_dif, struct_site | ||
| 2.2 | 2023-08-16 | Data collection, Refinement description | chem_comp_atom, chem_comp_bond, pdbx_initial_refinement_model | Download |
