PDBx/mmCIF
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Data Item
_chem_comp.id
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General
Item name
_chem_comp.id
Category name
chem_comp
Attribute name
id
Required in PDB entries
yes
Used in current PDB entries
Yes, in about 100.0 % of entries
Used in the Chemical Component dictionary
Yes
Item Description
The value of _chem_comp.id must uniquely identify each item in the CHEM_COMP list. For protein polymer entities, this is the three-letter code for the amino acid. For nucleic acid polymer entities, this is the one-letter code for the base.
Item Examples
4
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Item Example1
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ala
Item Example2
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val
Item Example3
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A
Item Example4
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C
Data Type
Data type code
ucode
Data type detail
code item types/single words (case insensitive) ...
Primitive data type code
uchar
Regular expression
[_,.;:"&<>()/\{}'`~!@#$%A-Za-z0-9*|+-]*
Child Data Items
_atom_site.label_comp_id
_chem_comp.mon_nstd_parent_comp_id
_chem_comp_atom.comp_id
_chem_comp_chir.comp_id
_chem_comp_chir_atom.comp_id
_chem_comp_plane.comp_id
_chem_comp_plane_atom.comp_id
_entity_poly_seq.mon_id
_struct_ref_seq_dif.db_mon_id
_struct_ref_seq_dif.mon_id