## NMR-STAR dictionary: database table: Atom

Detailed description of the fields

### _Atom.Assembly_atom_ID (AssemblyAtomID)

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NMR-STAR tag name | _Atom.Assembly_atom_ID
Description | NMR-STAR name: _Atom.Assembly_atom_ID A value that uniquely identifies the atom from all other atoms in the molecular assembly.
Database field name | AssemblyAtomID
SQL Database type | INTEGER
Part of primary Key | yes
Foreign Key on table, column | ,
Saveframe ID | yes: This tag contains the identifier for this saveframe in the entry.
Row Index | yes: This tag contains the index of this row in the loop, which is used when the data is loaded into a database which has a relational model in which ordering doesn't matter
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Assembly atom ID
Examples | ?
Help text |

### _Atom.Entity_assembly_ID (EntityAssemblyID)

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NMR-STAR tag name | _Atom.Entity_assembly_ID
Description | NMR-STAR name: _Atom.Entity_assembly_ID Pointer to '_Entity_assembly.ID'
Database field name | EntityAssemblyID
SQL Database type | INTEGER
Part of primary Key | no
Foreign Key on table, column | Entity_assembly, ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Entity assembly ID
Examples | ?
Help text |

### _Atom.Entity_ID (EntityID)

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NMR-STAR tag name | _Atom.Entity_ID
Description | NMR-STAR name: _Atom.Entity_ID Pointer to '_Entity.ID'
Database field name | EntityID
SQL Database type | INTEGER
Part of primary Key | no
Foreign Key on table, column | Entity, ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Entity ID
Examples | ?
Help text |

### _Atom.Comp_index_ID (CompIndexID)

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NMR-STAR tag name | _Atom.Comp_index_ID
Description | NMR-STAR name: _Atom.Comp_index_ID Pointer to '_Entity_comp_index.ID'
Database field name | CompIndexID
SQL Database type | INTEGER
Part of primary Key | no
Foreign Key on table, column | Entity_comp_index, ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Comp index ID
Examples | ?
Help text |

### _Atom.Seq_ID (SeqID)

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NMR-STAR tag name | _Atom.Seq_ID
Description | NMR-STAR name: _Atom.Seq_ID Pointer to '_PDBX_poly_seq_scheme.Seq_ID'
Database field name | SeqID
SQL Database type | INTEGER
Part of primary Key | no
Foreign Key on table, column | Entity_poly_seq, Num
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Seq ID
Examples | ?
Help text |

### _Atom.Comp_ID (CompID)

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NMR-STAR tag name | _Atom.Comp_ID
Description | NMR-STAR name: _Atom.Comp_ID Pointer to '_Chem_comp.ID'
Database field name | CompID
SQL Database type | CHAR(12)
Part of primary Key | no
Foreign Key on table, column | Chem_comp, ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Comp ID
Examples | ?
Help text |

### _Atom.Atom_type_ID (AtomTypeID)

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NMR-STAR tag name | _Atom.Atom_type_ID
Description | NMR-STAR name: _Atom.Atom_type_ID Pointer to '_Atom_type.ID'
Database field name | AtomTypeID
SQL Database type | INTEGER
Part of primary Key | no
Foreign Key on table, column | Atom_type, ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | no
Prompt | Atom type ID
Examples | ?
Help text |

### _Atom.Atom_ID (AtomID)

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NMR-STAR tag name | _Atom.Atom_ID
Description | NMR-STAR name: _Atom.Atom_ID The value of _Atom.Atom_id must uniquely identify a record in the atom list.
Database field name | AtomID
SQL Database type | CHAR(12)
Part of primary Key | no
Foreign Key on table, column | ,
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Atom ID
Examples | ?
Help text |

### _Atom.Type_symbol (TypeSymbol)

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NMR-STAR tag name | _Atom.Type_symbol
Description | NMR-STAR name: _Atom.Type_symbol The code used to identify the atom specie(s) representing this atom type. Normally this code is the element symbol. The code may be composed of any character except an underline with the additional proviso that digits designate an oxidation state and must be followed by a + or - character.
Database field name | TypeSymbol
SQL Database type | VARCHAR(15)
Part of primary Key | no
Foreign Key on table, column | ,
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Type symbol
Examples | ?
Help text |

### _Atom.PDB_one_letter_code (PDBOneLetterCode)

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NMR-STAR tag name | _Atom.PDB_one_letter_code
Description | NMR-STAR name: _Atom.PDB_one_letter_code One-letter code used by the PDB for amino acids and nucleic acids.
Database field name | PDBOneLetterCode
SQL Database type | VARCHAR(15)
Part of primary Key | no
Foreign Key on table, column | ,
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | no
Prompt | PDB one letter code
Examples | ?
Help text |

### _Atom.PDB_strand_ID (PDBStrandID)

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NMR-STAR tag name | _Atom.PDB_strand_ID
Description | NMR-STAR name: _Atom.PDB_strand_ID PDB strand/chain id.
Database field name | PDBStrandID
SQL Database type | VARCHAR(15)
Part of primary Key | no
Foreign Key on table, column | ,
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | no
Prompt | PDB strand ID
Examples | ?
Help text |

### _Atom.PDB_ins_code (PDBInsCode)

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NMR-STAR tag name | _Atom.PDB_ins_code
Description | NMR-STAR name: _Atom.PDB_ins_code PDB insertion code.
Database field name | PDBInsCode
SQL Database type | VARCHAR(15)
Part of primary Key | no
Foreign Key on table, column | ,
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | no
Prompt | PDB ins code
Examples | ?
Help text |

### _Atom.PDB_asym_ID (PDBAsymID)

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NMR-STAR tag name | _Atom.PDB_asym_ID
Description | NMR-STAR name: _Atom.PDB_asym_ID Pointer to _Atom_site.PDBX_label_asym_id'.
Database field name | PDBAsymID
SQL Database type | CHAR(12)
Part of primary Key | no
Foreign Key on table, column | Atom_site, PDBX_label_asym_ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | no
Prompt | PDB asym ID
Examples | ?
Help text |

### _Atom.PDB_seq_ID (PDBSeqID)

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NMR-STAR tag name | _Atom.PDB_seq_ID
Description | NMR-STAR name: _Atom.PDB_seq_ID Pointer to '_PDBX_poly_seq_scheme.Seq_ID'
Database field name | PDBSeqID
SQL Database type | INTEGER
Part of primary Key | no
Foreign Key on table, column | Entity_poly_seq, Num
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | no
Prompt | PDB seq ID
Examples | ?
Help text |

### _Atom.PDB_comp_ID (PDBCompID)

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NMR-STAR tag name | _Atom.PDB_comp_ID
Description | NMR-STAR name: _Atom.PDB_comp_ID Pointer to '_Chem_comp.ID'
Database field name | PDBCompID
SQL Database type | CHAR(12)
Part of primary Key | no
Foreign Key on table, column | Chem_comp, ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | no
Prompt | PDB comp ID
Examples | ?
Help text |

### _Atom.PDB_group (PDBGroup)

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NMR-STAR tag name | _Atom.PDB_group
Description | NMR-STAR name: _Atom.PDB_group The group of atoms to which the atom site belongs. This data item is provided for compatibility with the original Protein Data Bank format, and only for that purpose.
Database field name | PDBGroup
SQL Database type | VARCHAR(15)
Part of primary Key | no
Foreign Key on table, column | ,
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | no
Prompt | PDB group
Examples | ?
Help text |

### _Atom.PDB_atom_ID (PDBAtomID)

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NMR-STAR tag name | _Atom.PDB_atom_ID
Description | NMR-STAR name: _Atom.PDB_atom_ID This data item is a pointer to '_Chem_comp_atom.Atom_id in the chem_comp_atom category.
Database field name | PDBAtomID
SQL Database type | VARCHAR(15)
Part of primary Key | no
Foreign Key on table, column | ,
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | no
Prompt | PDB atom ID
Examples | ?
Help text |

### _Atom.PDB_atom_type (PDBAtomType)

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NMR-STAR tag name | _Atom.PDB_atom_type
Description | NMR-STAR name: _Atom.PDB_atom_type Standard symbol used to define the atom element type.
Database field name | PDBAtomType
SQL Database type | VARCHAR(15)
Part of primary Key | no
Foreign Key on table, column | ,
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | no
Prompt | PDB atom type
Examples | ?
Help text |

### _Atom.Sf_ID (SfID)

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NMR-STAR tag name | _Atom.Sf_ID
Description | NMR-STAR name: _Atom.Sf_ID Pointer to '_Assembly.Sf_ID'
Database field name | SfID
SQL Database type | INTEGER
Part of primary Key | no
Foreign Key on table, column | Assembly, Sf_ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | yes This field's data is for internal use only and should be hidden in public versiond of the data.
Nulls allowed in database? | yes
Prompt | Sf ID
Examples | ?
Help text |

### _Atom.Entry_ID (EntryID)

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NMR-STAR tag name | _Atom.Entry_ID
Description | NMR-STAR name: _Atom.Entry_ID Pointer to '_Entry.ID'
Database field name | EntryID
SQL Database type | CHAR(12)
Part of primary Key | yes
Foreign Key on table, column | Assembly, Entry_ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Entry ID
Examples | ?
Help text |

### _Atom.Assembly_ID (AssemblyID)

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NMR-STAR tag name | _Atom.Assembly_ID
Description | NMR-STAR name: _Atom.Assembly_ID Pointer to '_Assembly.ID'
Database field name | AssemblyID
SQL Database type | INTEGER
Part of primary Key | yes
Foreign Key on table, column | Assembly, ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Assembly ID
Examples | ?
Help text |