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
A code that uniquely identifies the chemical component from all other chemical components in the entry.
Data Type
Data type code
code
Data type detail
code item types/single words ...
Primitive data type code
char
Regular expression
[_,.;:"&<>()/\{}'`~!@#$%A-Za-z0-9*|+-]*
Child Data Items
_angle.comp_id_1
_angle.comp_id_2
_angle.comp_id_3
_angular_order_param.comp_id
_assembly_segment.comp_id
_assigned_peak_chem_shift.comp_id
_assigned_spectral_transition.comp_id
_atom.comp_id
_atom.pdb_comp_id
_atom_chem_shift.comp_id
_atom_nomenclature.comp_id
_atom_site.label_comp_id
_atom_site.pdbx_label_comp_id
_author_annotation.comp_id
_auto_relaxation.comp_id
_binding_result.atm_obs_comp_id
_bond.comp_id_1
_bond.comp_id_2
_bond_annotation.comp_id_1
_bond_annotation.comp_id_2
_ca_cb_constraint.comp_id_1
_ca_cb_constraint.comp_id_2
_ca_cb_constraint.comp_id_3
_ca_cb_constraint.comp_id_4
_ca_cb_constraint.comp_id_5
_characteristic.comp_id
_chem_comp_angle.comp_id
_chem_comp_assembly.comp_id
_chem_comp_atom.comp_id
_chem_comp_bio_function.comp_id
_chem_comp_bond.comp_id
_chem_comp_citation.comp_id
_chem_comp_common_name.comp_id
_chem_comp_db_link.comp_id
_chem_comp_descriptor.comp_id
_chem_comp_identifier.comp_id
_chem_comp_keyword.comp_id
_chem_comp_smiles.comp_id
_chem_comp_systematic_name.comp_id
_chem_comp_tor.comp_id
_chem_struct_descriptor.comp_id
_chemical_rate.comp_id
_coupling_constant.comp_id_1
_coupling_constant.comp_id_2
_cross_correlation_d_csa.csa_comp_id_1
_cross_correlation_d_csa.csa_comp_id_2
_cross_correlation_d_csa.dipole_comp_id_1
_cross_correlation_d_csa.dipole_comp_id_2
_cross_correlation_dd.dipole_1_comp_id_1
_cross_correlation_dd.dipole_1_comp_id_2
_cross_correlation_dd.dipole_2_comp_id_1
_cross_correlation_dd.dipole_2_comp_id_2
_cs_anisotropy.comp_id
_d_h_fractionation_factor.comp_id
_deduced_h_bond.h_atom_comp_id
_deduced_h_bond.heavy_atom_comp_id_1
_deduced_h_bond.heavy_atom_comp_id_2
_deduced_secd_struct_feature.comp_id
_dipolar_coupling.comp_id_1
_dipolar_coupling.comp_id_2
_dipole_dipole_relax.comp_id_1
_dipole_dipole_relax.comp_id_2
_dist_constraint.comp_id
_entity.nonpolymer_comp_id
_entity_atom_list.comp_id
_entity_bond.comp_id_1
_entity_bond.comp_id_2
_entity_chem_comp_deleted_atom.comp_id
_entity_comp_index.comp_id
_entity_comp_index_alt.comp_id
_entity_deleted_atom.comp_id
_floating_chirality.comp_id_1
_floating_chirality.comp_id_2
_gen_dist_constraint.comp_id_1
_gen_dist_constraint.comp_id_2
_h_chem_shift_constraint.comp_id
_h_exch_protection_factor.comp_id
_h_exch_rate.comp_id
_heteronucl_noe.comp_id_1
_heteronucl_noe.comp_id_2
_homonucl_noe.comp_id_1
_homonucl_noe.comp_id_2
_interatomic_dist.comp_id_1
_interatomic_dist.comp_id_2
_isotope_effect.comp_id
_isotope_label_pattern.comp_id
_j_three_bond_constraint.comp_id_1
_j_three_bond_constraint.comp_id_2
_j_three_bond_constraint.comp_id_3
_j_three_bond_constraint.comp_id_4
_mol_interaction_chem_shift.comp_id
_ms_chrom_ion_annotation.comp_id
_mz_precursor_ion_annotation.comp_id
_mz_product_ion_annotation.comp_id
_order_param.comp_id
_other_data.comp_id
_pdbx_chem_comp_feature.comp_id
_pdbx_nonpoly_scheme.comp_id
_pdbx_poly_seq_scheme.comp_id
_ph_titr_result.atm_obs_comp_id
_ph_titr_result.atm_titr_comp_id
_rdc.comp_id_1
_rdc.comp_id_2
_rdc_constraint.comp_id_1
_rdc_constraint.comp_id_2
_rep_conf.comp_id
_resonance_assignment.comp_id
_sample_component_atom_isotope.comp_id
_spectral_density.comp_id
_spin_system.comp_id
_structure_interaction.comp_id_1
_structure_interaction.comp_id_2
_t1.comp_id
_t1rho.comp_id
_t2.comp_id
_tensor.comp_id
_terminal_residue.comp_id
_tertiary_struct.comp_id
_theoretical_chem_shift.comp_id
_torsion_angle.comp_id_1
_torsion_angle.comp_id_2
_torsion_angle.comp_id_3
_torsion_angle.comp_id_4
_torsion_angle_constraint.comp_id_1
_torsion_angle_constraint.comp_id_2
_torsion_angle_constraint.comp_id_3
_torsion_angle_constraint.comp_id_4