Worldwide PDB Protein Data Bank
wwPDB Remediation Description

New Chemical Component Dictionary Content

The table below summarizes the new content added to the Chemical Component Dictionary in comparison to the currrent dictionary.

These new data items, along with the full scope of the remediation project, are discussed in the overview (PDF).

Current Dictionary Content

_chem_comp.id Component ID code
_chem_comp.name Chemical name, usually the IUPAC name
_chem_comp.type Polymer type
_chem_comp.pdbx_type Component type(e.g. ion, inhibitor, drug, coenzyme, amino acid, nucleic acid...etc)
_chem_comp.formula Chemical formula
_chem_comp.pdbx_synonyms Semicolon separated list of synonyms. In some cases names provided by the author.
_chem_comp.pdbx_formal_charge Formal charge of component
_chem_comp.pdbx_initial_date Date component definition was created
_chem_comp.pdbx_modified_date Date component definition was last modified
_chem_comp_atom.comp_id Component code
_chem_comp_atom.atom_id Current atom labeling
_chem_comp_atom.type_symbol Atom symbol
_chem_comp_atom.charge Atom charge
_chem_comp_atom.model_Cartn_x
_chem_comp_atom.model_Cartn_y
_chem_comp_atom.model_Cartn_z
Model coordinates from a PDB entry
_chem_comp_atom.pdbx_align Alignment of atom name field in PDB format file
_chem_comp_atom.pdbx_ordinal Ordering of atoms in PDB file
_chem_comp_bond.comp_id Component code
_chem_comp_bond.atom_id_1 First atom label in a particular bond
_chem_comp_bond.atom_id_2 Second atom label in the same bond
_chem_comp_bond.value_order Bond type (Single, double ...etc)
_chem_comp_bond.pdbx_ordinal Ordering index for bonds

New Dictionary Content

_chem_comp.pdbx_release_statusStatus of ligand (released, hold, obsoleted)
_chem_comp.pdbx_ambiguous_flag For ligand with unconventional bonding (i.e. ligands with transition metal complexes}
_chem_comp.pdbx_replaced_by If ligand is obseleted, this data item defines the ligand that replaces it
_pdbx_chem_comp_descriptor.type Defines decriptor type (SMILES)
_pdbx_chem_comp_descriptor.descriptor Actual SMILES strings
_pdbx_chem_comp_descriptor.program Program used to generate SMILES string
_pdbx_chem_comp_descriptor.program_version Program version
_chem_comp_atom.atom_id Revised atom labeling. Old atom labeling has been stored in _chem_comp_atom.alt_atom_id
_chem_comp_atom.pdbx_aromatic_flag Defines atoms in aromatic complex
_chem_comp_atom.pdbx_stereo_config Defines stereochemistry of atom (R/S)
_chem_comp_atom.pdbx_leaving_atom_flag Flags atoms with leaving capability
_chem_comp_atom.pdbx_model_Cartn_x_ideal
_chem_comp_atom.pdbx_model_Cartn_y_ideal
_chem_comp_atom.pdbx_model_Cartn_z_ideal
Computed idealized coordinates
_chem_comp_bond.pdbx_aromatic_flag Defines aromatic bonds
_chem_comp_bond.pdbx_stereo_config Defines stereochemical bonds

 

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