## NMR-STAR dictionary: database table: Bond

Detailed description of the fields

### _Bond.ID (BondID)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.ID
Description | NMR-STAR name: _Bond.ID Unique identifier for the bond being defined. The value can be a unique integer (i.e., 1, 2, 3, etc.).
Database field name | BondID
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 | Unique bond identifier
Examples | 1
Help text |

### _Bond.Type (Type)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Type
Description | NMR-STAR name: _Bond.Type A descriptive phrase or word that characterized the bond.
Database field name | Type
SQL Database type | VARCHAR(127)
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
Enumerations | [click for a list of enumerations] This is an open enumeration. The list of values are only suggestions. They are not enforced.
Prompt | Bond type
Examples | disulfide
Help text |

### _Bond.Order (BondOrder)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Order
Description | NMR-STAR name: _Bond.Order The order of the bond between two atoms (i.e., single, double, etc.)
Database field name | BondOrder
SQL Database type | VARCHAR(127)
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
Enumerations | [click for a list of enumerations] This is a closed enumeration. The list of values are the only ones allowed.
Prompt | Bond order
Examples | SING
Help text |

### _Bond.Assembly_atom_ID_1 (AssemblyAtomID1)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Assembly_atom_ID_1
Description | NMR-STAR name: _Bond.Assembly_atom_ID_1 Pointer to '_Atom.Assembly_atom_ID'
Database field name | AssemblyAtomID1
SQL Database type | INTEGER
Part of primary Key | no
Foreign Key on table, column | Atom, Assembly_atom_ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | no
Prompt | Assembly atom ID 1
Examples | ?
Help text |

### _Bond.Entity_assembly_ID_1 (EntityAssemblyID1)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Entity_assembly_ID_1
Description | NMR-STAR name: _Bond.Entity_assembly_ID_1 Pointer to '_Entity_assembly.ID'
Database field name | EntityAssemblyID1
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 | Atom 1 entity assembly component ID
Examples | ?
Help text |

### _Bond.Entity_assembly_name_1 (EntityAssemblyName1)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Entity_assembly_name_1
Description | NMR-STAR name: _Bond.Entity_assembly_name_1 Pointer to '_Entity_assembly.Entity_assembly_name'
Database field name | EntityAssemblyName1
SQL Database type | VARCHAR(127)
Part of primary Key | no
Foreign Key on table, column | Entity_assembly, Entity_assembly_name
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | no
Prompt | Entity assembly name 1
Examples | ?
Help text |

### _Bond.Entity_ID_1 (EntityID1)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Entity_ID_1
Description | NMR-STAR name: _Bond.Entity_ID_1 Pointer to '_Entity.ID'
Database field name | EntityID1
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 | Atom 1 entity ID
Examples | ?
Help text |

### _Bond.Comp_ID_1 (CompID1)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Comp_ID_1
Description | NMR-STAR name: _Bond.Comp_ID_1 Pointer to '_Chem_comp.ID'
Database field name | CompID1
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 | Atom 1 comp ID
Examples | ?
Help text |

### _Bond.Comp_index_ID_1 (CompIndexID1)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Comp_index_ID_1
Description | NMR-STAR name: _Bond.Comp_index_ID_1 Pointer to '_Entity_comp_index.ID'
Database field name | CompIndexID1
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 1
Examples | ?
Help text |

### _Bond.Seq_ID_1 (SeqID1)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Seq_ID_1
Description | NMR-STAR name: _Bond.Seq_ID_1 Pointer to '_PDBX_poly_seq_scheme.Seq_ID'
Database field name | SeqID1
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 | First bonded atom's residue sequence number
Examples | 36
Help text |

### _Bond.Atom_ID_1 (AtomID1)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Atom_ID_1
Description | NMR-STAR name: _Bond.Atom_ID_1 Pointer to '_Chem_comp_atom.Atom_ID'
Database field name | AtomID1
SQL Database type | CHAR(12)
Part of primary Key | no
Foreign Key on table, column | Chem_comp_atom, Atom_ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | First bonded atom's name
Examples | SG
Help text |

### _Bond.Assembly_atom_ID_2 (AssemblyAtomID2)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Assembly_atom_ID_2
Description | NMR-STAR name: _Bond.Assembly_atom_ID_2 Pointer to '_Atom.Assembly_atom_ID'
Database field name | AssemblyAtomID2
SQL Database type | INTEGER
Part of primary Key | no
Foreign Key on table, column | Atom, Assembly_atom_ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | no
Prompt | Assembly atom ID 2
Examples | ?
Help text |

### _Bond.Entity_assembly_ID_2 (EntityAssemblyID2)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Entity_assembly_ID_2
Description | NMR-STAR name: _Bond.Entity_assembly_ID_2 Pointer to '_Entity_assembly.ID'
Database field name | EntityAssemblyID2
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 | Atom 2 entity assembly component ID
Examples | ?
Help text |

### _Bond.Entity_assembly_name_2 (EntityAssemblyName2)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Entity_assembly_name_2
Description | NMR-STAR name: _Bond.Entity_assembly_name_2 Pointer to '_Entity_assembly.Entity_assembly_name'
Database field name | EntityAssemblyName2
SQL Database type | VARCHAR(127)
Part of primary Key | no
Foreign Key on table, column | Entity_assembly, Entity_assembly_name
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | no
Prompt | Entity assembly name 2
Examples | ?
Help text |

### _Bond.Entity_ID_2 (EntityID2)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Entity_ID_2
Description | NMR-STAR name: _Bond.Entity_ID_2 Pointer to '_Entity.ID'
Database field name | EntityID2
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 | Atom 2 entity ID
Examples | ?
Help text |

### _Bond.Comp_ID_2 (CompID2)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Comp_ID_2
Description | NMR-STAR name: _Bond.Comp_ID_2 Pointer to '_Chem_comp.ID'
Database field name | CompID2
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 | Atom 2 comp ID
Examples | ?
Help text |

### _Bond.Comp_index_ID_2 (CompIndexID2)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Comp_index_ID_2
Description | NMR-STAR name: _Bond.Comp_index_ID_2 Pointer to '_Entity_comp_index.ID'
Database field name | CompIndexID2
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 2
Examples | ?
Help text |

### _Bond.Seq_ID_2 (SeqID2)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Seq_ID_2
Description | NMR-STAR name: _Bond.Seq_ID_2 Pointer to '_PDBX_poly_seq_scheme.Seq_ID'
Database field name | SeqID2
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 | Second bonded atom residue sequence number
Examples | 5
Help text |

### _Bond.Atom_ID_2 (AtomID2)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Atom_ID_2
Description | NMR-STAR name: _Bond.Atom_ID_2 Pointer to '_Chem_comp_atom.Atom_ID'
Database field name | AtomID2
SQL Database type | CHAR(12)
Part of primary Key | no
Foreign Key on table, column | Chem_comp_atom, Atom_ID
Saveframe ID | no
Row Index | no
Secondary Index | no
Internal Flag | no
Nulls allowed in database? | yes
Prompt | Name for the second atom
Examples | SG
Help text |

### _Bond.Auth_entity_assembly_ID_1 (AuthEntityAssemblyID1)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Auth_entity_assembly_ID_1
Description | NMR-STAR name: _Bond.Auth_entity_assembly_ID_1 Enter the name given to the biopolymer or ligand as a component of the molecular system where the first atom in the bond is located. For complex systems that have many components, this might be something like 'alpha chain 1' or 'heme 3'. A pull down list of the names assigned to the molecular system components in the section above is provided.
Database field name | AuthEntityAssemblyID1
SQL Database type | VARCHAR(127)
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 | First bonded atom molecular assembly component
Examples | monomer 1
Help text |

### _Bond.Auth_entity_assembly_name_1 (AuthEntityAssemblyName1)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Auth_entity_assembly_name_1
Description | NMR-STAR name: _Bond.Auth_entity_assembly_name_1 Enter the name given to the biopolymer or ligand as a component of the molecular system where the first atom in the bond is located. For complex systems that have many components, this might be something like 'alpha chain 1' or 'heme 3'. A pull down list of the names assigned to the molecular system components in the section above is provided.
Database field name | AuthEntityAssemblyName1
SQL Database type | VARCHAR(127)
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 | First bonded atom molecular assembly component
Examples | monomer 1
Help text |

### _Bond.Auth_seq_ID_1 (AuthSeqID1)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Auth_seq_ID_1
Description | NMR-STAR name: _Bond.Auth_seq_ID_1 Enter the residue sequence number or code for the first atom in the bond. If the atom is located in a ligand a residue sequence number does not apply, enter 'na'.
Database field name | AuthSeqID1
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 | First bonded atom residue sequence number
Examples | 13
Help text |

### _Bond.Auth_comp_ID_1 (AuthCompID1)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Auth_comp_ID_1
Description | NMR-STAR name: _Bond.Auth_comp_ID_1 Enter the residue code (three-letter code for amino acids or one-letter code for nucleic acids) for the first atom in the bond. If the atom is located in a ligand an 'residue code' does not apply, enter 'na'.
Database field name | AuthCompID1
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 | First bonded atom residue code
Examples | CYS
Help text |

### _Bond.Auth_atom_ID_1 (AuthAtomID1)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Auth_atom_ID_1
Description | NMR-STAR name: _Bond.Auth_atom_ID_1 Enter the name for the first atom in the bond. For amino acids and nucleic acids, the IUPAC atom nomenclature is prefered.
Database field name | AuthAtomID1
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 | First bonded atom name
Examples | SG
Help text |

### _Bond.Auth_entity_assembly_ID_2 (AuthEntityAssemblyID2)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Auth_entity_assembly_ID_2
Description | NMR-STAR name: _Bond.Auth_entity_assembly_ID_2 Enter the name given to the biopolymer or ligand as a component of the molecular system where the second atom in the bond is located. For complex systems that have many components, this might be something like 'alpha chain 1' or 'heme 3'. A pull down list of the names assigned to the molecular system components in the section above is provided.
Database field name | AuthEntityAssemblyID2
SQL Database type | VARCHAR(127)
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 | Second bonded atom molecular assembly component
Examples | monomer 2
Help text |

### _Bond.Auth_entity_assembly_name_2 (AuthEntityAssemblyName2)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Auth_entity_assembly_name_2
Description | NMR-STAR name: _Bond.Auth_entity_assembly_name_2 Enter the name given to the biopolymer or ligand as a component of the molecular system where the second atom in the bond is located. For complex systems that have many components, this might be something like 'alpha chain 1' or 'heme 3'. A pull down list of the names assigned to the molecular system components in the section above is provided.
Database field name | AuthEntityAssemblyName2
SQL Database type | VARCHAR(127)
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 | Second bonded atom molecular assembly component
Examples | monomer 2
Help text |

### _Bond.Auth_seq_ID_2 (AuthSeqID2)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Auth_seq_ID_2
Description | NMR-STAR name: _Bond.Auth_seq_ID_2 Enter the residue sequence number or code for the first atom in the bond. If the atom is located in a ligand a residue sequence number does not apply, enter 'na'.
Database field name | AuthSeqID2
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 | Second bonded atom residue sequence number
Examples | 42
Help text |

### _Bond.Auth_comp_ID_2 (AuthCompID2)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Auth_comp_ID_2
Description | NMR-STAR name: _Bond.Auth_comp_ID_2 Enter the residue code (three-letter code for amino acids or one-letter code for nucleic acids) for the first atom in the bond. If the atom is located in a ligand an 'residue code' does not apply, enter 'na'.
Database field name | AuthCompID2
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 | Second bonded atom residue code
Examples | CYS
Help text |

### _Bond.Auth_atom_ID_2 (AuthAtomID2)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Auth_atom_ID_2
Description | NMR-STAR name: _Bond.Auth_atom_ID_2 Enter the name for the first atom in the bond. For amino acids and nucleic acids, the IUPAC atom nomenclature is prefered.
Database field name | AuthAtomID2
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 | Second bonded atom name
Examples | SG
Help text |

### _Bond.Sf_ID (SfID)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Sf_ID
Description | NMR-STAR name: _Bond.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 |

### _Bond.Entry_ID (EntryID)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Entry_ID
Description | NMR-STAR name: _Bond.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 |

### _Bond.Assembly_ID (AssemblyID)

(go to parent tag category listing)

NMR-STAR tag name | _Bond.Assembly_ID
Description | NMR-STAR name: _Bond.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 |